[PATCH 0/7] bmips: add bcm6345 reset controller support

[PATCH 0/7] bmips: add bcm6345 reset controller support

[Álvaro Fernández Rojas]

BCM63xx SoCs have a reset controller for certain components.

Álvaro Fernández Rojas (7):
  mips: bmips: select ARCH_HAS_RESET_CONTROLLER
  dt-bindings: reset: add BCM6345 reset controller bindings
  reset: add BCM6345 reset controller driver
  mips: bmips: dts: add BCM6328 reset controller support
  mips: bmips: dts: add BCM6358 reset controller support
  mips: bmips: dts: add BCM6362 reset controller support
  mips: bmips: dts: add BCM6368 reset controller support

 .../bindings/reset/brcm,bcm6345-reset.yaml    |  37 +++++
 arch/mips/Kconfig                             |   1 +
 arch/mips/boot/dts/brcm/bcm6328.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6358.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6362.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6368.dtsi          |   6 +
 drivers/reset/Kconfig                         |   7 +
 drivers/reset/Makefile                        |   1 +
 drivers/reset/reset-bcm6345.c                 | 149 ++++++++++++++++++
 9 files changed, 219 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
 create mode 100644 drivers/reset/reset-bcm6345.c

-- 
2.26.2

[PATCH 1/7] mips: bmips: select ARCH_HAS_RESET_CONTROLLER

[Álvaro Fernández Rojas]

This allows to add reset controllers support.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 arch/mips/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 9dc08ee3d6b9..e82586e7719c 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -229,6 +229,7 @@ config ATH79
 
 config BMIPS_GENERIC
 	bool "Broadcom Generic BMIPS kernel"
+	select ARCH_HAS_RESET_CONTROLLER
 	select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
 	select ARCH_HAS_PHYS_TO_DMA
 	select BOOT_RAW
-- 
2.26.2

[PATCH 2/7] dt-bindings: reset: add BCM6345 reset controller bindings

[Álvaro Fernández Rojas]

Add support for resetting blocks through the Linux reset controller
subsystem for BCM63xx SoCs.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 .../bindings/reset/brcm,bcm6345-reset.yaml    | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml

diff --git a/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml b/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
new file mode 100644
index 000000000000..eb3f2182e631
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/reset/brcm,bcm6345-reset.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: BCM6345 reset controller
+
+description: This document describes the BCM6345 reset controller.
+
+maintainers:
+  - Álvaro Fernández Rojas <noltari@gmail.com>
+
+properties:
+  compatible:
+    const: brcm,bcm6345-reset
+
+  reg:
+    maxItems: 2
+
+  "#reset-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    reset-controller@10000010 {
+      compatible = "brcm,bcm6345-reset";
+      reg = <0x10000010 0x4>;
+      #reset-cells = <1>;
+    };
-- 
2.26.2

[PATCH 3/7] reset: add BCM6345 reset controller driver

[Álvaro Fernández Rojas]

Add support for resetting blocks through the Linux reset controller
subsystem for BCM63xx SoCs.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 drivers/reset/Kconfig         |   7 ++
 drivers/reset/Makefile        |   1 +
 drivers/reset/reset-bcm6345.c | 149 ++++++++++++++++++++++++++++++++++
 3 files changed, 157 insertions(+)
 create mode 100644 drivers/reset/reset-bcm6345.c

diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index d9efbfd29646..9f1da978cef6 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -41,6 +41,13 @@ config RESET_BERLIN
 	help
 	  This enables the reset controller driver for Marvell Berlin SoCs.
 
+config RESET_BCM6345
+	bool "BCM6345 Reset Controller"
+	depends on BMIPS_GENERIC || COMPILE_TEST
+	default BMIPS_GENERIC
+	help
+	  This enables the reset controller driver for BCM6345 SoCs.
+
 config RESET_BRCMSTB
 	tristate "Broadcom STB reset controller"
 	depends on ARCH_BRCMSTB || COMPILE_TEST
diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index 249ed357c997..e642aae42f0f 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/
 obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
 obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
 obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
+obj-$(CONFIG_RESET_BCM6345) += reset-bcm6345.o
 obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
 obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
 obj-$(CONFIG_RESET_BRCMSTB_RESCAL) += reset-brcmstb-rescal.o
diff --git a/drivers/reset/reset-bcm6345.c b/drivers/reset/reset-bcm6345.c
new file mode 100644
index 000000000000..088b7fdb896b
--- /dev/null
+++ b/drivers/reset/reset-bcm6345.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * BCM6345 Reset Controller Driver
+ *
+ * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+
+#define BCM6345_RESET_NUM		32
+#define BCM6345_RESET_SLEEP_MIN_US	10000
+#define BCM6345_RESET_SLEEP_MAX_US	20000
+
+struct bcm6345_reset {
+	struct reset_controller_dev rcdev;
+	void __iomem *base;
+	spinlock_t lock;
+};
+
+static int bcm6345_reset_update(struct bcm6345_reset *bcm6345_reset,
+				unsigned long id, bool assert)
+{
+	uint32_t val;
+
+	val = __raw_readl(bcm6345_reset->base);
+	if (assert)
+		val &= ~BIT(id);
+	else
+		val |= BIT(id);
+	__raw_writel(val, bcm6345_reset->base);
+
+	return 0;
+}
+
+static int bcm6345_reset_assert(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	struct bcm6345_reset *bcm6345_reset =
+		container_of(rcdev, struct bcm6345_reset, rcdev);
+	unsigned long flags;
+
+	spin_lock_irqsave(&bcm6345_reset->lock, flags);
+	bcm6345_reset_update(bcm6345_reset, id, true);
+	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
+
+	return 0;
+}
+
+static int bcm6345_reset_deassert(struct reset_controller_dev *rcdev,
+				  unsigned long id)
+{
+	struct bcm6345_reset *bcm6345_reset =
+		container_of(rcdev, struct bcm6345_reset, rcdev);
+	unsigned long flags;
+
+	spin_lock_irqsave(&bcm6345_reset->lock, flags);
+	bcm6345_reset_update(bcm6345_reset, id, false);
+	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
+
+	return 0;
+}
+
+static int bcm6345_reset_reset(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	struct bcm6345_reset *bcm6345_reset =
+		container_of(rcdev, struct bcm6345_reset, rcdev);
+	unsigned long flags;
+
+	spin_lock_irqsave(&bcm6345_reset->lock, flags);
+	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
+		     BCM6345_RESET_SLEEP_MAX_US);
+	bcm6345_reset_update(bcm6345_reset, id, true);
+	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
+		     BCM6345_RESET_SLEEP_MAX_US);
+	bcm6345_reset_update(bcm6345_reset, id, false);
+	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
+
+	return 0;
+}
+
+static int bcm6345_reset_status(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	struct bcm6345_reset *bcm6345_reset =
+		container_of(rcdev, struct bcm6345_reset, rcdev);
+
+	return !(__raw_readl(bcm6345_reset->base) & BIT(id));
+}
+
+static struct reset_control_ops bcm6345_reset_ops = {
+	.assert = bcm6345_reset_assert,
+	.deassert = bcm6345_reset_deassert,
+	.reset = bcm6345_reset_reset,
+	.status = bcm6345_reset_status,
+};
+
+static int bcm6345_reset_probe(struct platform_device *pdev)
+{
+	struct bcm6345_reset *bcm6345_reset;
+	struct resource *res;
+	int err;
+
+	bcm6345_reset = devm_kzalloc(&pdev->dev,
+				     sizeof(*bcm6345_reset), GFP_KERNEL);
+	if (!bcm6345_reset)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, bcm6345_reset);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	bcm6345_reset->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(bcm6345_reset->base))
+		return PTR_ERR(bcm6345_reset->base);
+
+	spin_lock_init(&bcm6345_reset->lock);
+	bcm6345_reset->rcdev.ops = &bcm6345_reset_ops;
+	bcm6345_reset->rcdev.owner = THIS_MODULE;
+	bcm6345_reset->rcdev.of_node = pdev->dev.of_node;
+	bcm6345_reset->rcdev.of_reset_n_cells = 1;
+	bcm6345_reset->rcdev.nr_resets = BCM6345_RESET_NUM;
+
+	err = devm_reset_controller_register(&pdev->dev,
+					     &bcm6345_reset->rcdev);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static const struct of_device_id bcm6345_reset_of_match[] = {
+	{ .compatible = "brcm,bcm6345-reset" },
+	{ },
+};
+
+static struct platform_driver bcm6345_reset_driver = {
+	.probe = bcm6345_reset_probe,
+	.driver	= {
+		.name = "bcm6345-reset",
+		.of_match_table = bcm6345_reset_of_match,
+		.suppress_bind_attrs = true,
+	},
+};
+builtin_platform_driver(bcm6345_reset_driver);
-- 
2.26.2

[PATCH 4/7] mips: bmips: dts: add BCM6328 reset controller support

[Álvaro Fernández Rojas]

BCM6328 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 arch/mips/boot/dts/brcm/bcm6328.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/mips/boot/dts/brcm/bcm6328.dtsi b/arch/mips/boot/dts/brcm/bcm6328.dtsi
index af860d06def6..590118cf5c12 100644
--- a/arch/mips/boot/dts/brcm/bcm6328.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6328.dtsi
@@ -57,6 +57,12 @@ clkctl: clock-controller@10000004 {
 			#clock-cells = <1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
-- 
2.26.2

[PATCH 5/7] mips: bmips: dts: add BCM6358 reset controller support

[Álvaro Fernández Rojas]

BCM6358 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 arch/mips/boot/dts/brcm/bcm6358.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/mips/boot/dts/brcm/bcm6358.dtsi b/arch/mips/boot/dts/brcm/bcm6358.dtsi
index f21176cac038..9d93e7f5e6fc 100644
--- a/arch/mips/boot/dts/brcm/bcm6358.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6358.dtsi
@@ -82,6 +82,12 @@ periph_intc: interrupt-controller@fffe000c {
 			interrupts = <2>, <3>;
 		};
 
+		periph_rst: reset-controller@fffe0034 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0xfffe0034 0x4>;
+			#reset-cells = <1>;
+		};
+
 		leds0: led-controller@fffe00d0 {
 			#address-cells = <1>;
 			#size-cells = <0>;
-- 
2.26.2

[PATCH 6/7] mips: bmips: dts: add BCM6362 reset controller support

[Álvaro Fernández Rojas]

BCM6362 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 arch/mips/boot/dts/brcm/bcm6362.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/mips/boot/dts/brcm/bcm6362.dtsi b/arch/mips/boot/dts/brcm/bcm6362.dtsi
index 8ae6981735b8..443af6b4c838 100644
--- a/arch/mips/boot/dts/brcm/bcm6362.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6362.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
-- 
2.26.2

[PATCH 7/7] mips: bmips: dts: add BCM6368 reset controller support

[Álvaro Fernández Rojas]

BCM6368 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 arch/mips/boot/dts/brcm/bcm6368.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/mips/boot/dts/brcm/bcm6368.dtsi b/arch/mips/boot/dts/brcm/bcm6368.dtsi
index 449c167dd892..52c19f40b9cc 100644
--- a/arch/mips/boot/dts/brcm/bcm6368.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6368.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
-- 
2.26.2

Re: [PATCH 3/7] reset: add BCM6345 reset controller driver

[Philipp Zabel]

Hi Álvaro,

On Tue, 2020-06-09 at 15:42 +0200, Álvaro Fernández Rojas wrote:
> Add support for resetting blocks through the Linux reset controller
> subsystem for BCM63xx SoCs.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
> ---
>  drivers/reset/Kconfig         |   7 ++
>  drivers/reset/Makefile        |   1 +
>  drivers/reset/reset-bcm6345.c | 149 ++++++++++++++++++++++++++++++++++
>  3 files changed, 157 insertions(+)
>  create mode 100644 drivers/reset/reset-bcm6345.c
> 
> diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
> index d9efbfd29646..9f1da978cef6 100644
> --- a/drivers/reset/Kconfig
> +++ b/drivers/reset/Kconfig
> @@ -41,6 +41,13 @@ config RESET_BERLIN
>  	help
>  	  This enables the reset controller driver for Marvell Berlin SoCs.
>  
> +config RESET_BCM6345
> +	bool "BCM6345 Reset Controller"
> +	depends on BMIPS_GENERIC || COMPILE_TEST
> +	default BMIPS_GENERIC
> +	help
> +	  This enables the reset controller driver for BCM6345 SoCs.
> +
>  config RESET_BRCMSTB
>  	tristate "Broadcom STB reset controller"
>  	depends on ARCH_BRCMSTB || COMPILE_TEST
> diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
> index 249ed357c997..e642aae42f0f 100644
> --- a/drivers/reset/Makefile
> +++ b/drivers/reset/Makefile
> @@ -6,6 +6,7 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/
>  obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
>  obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
>  obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
> +obj-$(CONFIG_RESET_BCM6345) += reset-bcm6345.o
>  obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
>  obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
>  obj-$(CONFIG_RESET_BRCMSTB_RESCAL) += reset-brcmstb-rescal.o
> diff --git a/drivers/reset/reset-bcm6345.c b/drivers/reset/reset-bcm6345.c
> new file mode 100644
> index 000000000000..088b7fdb896b
> --- /dev/null
> +++ b/drivers/reset/reset-bcm6345.c
> @@ -0,0 +1,149 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * BCM6345 Reset Controller Driver
> + *
> + * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com>
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/init.h>
> +#include <linux/io.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/platform_device.h>
> +#include <linux/reset-controller.h>
> +
> +#define BCM6345_RESET_NUM		32
> +#define BCM6345_RESET_SLEEP_MIN_US	10000
> +#define BCM6345_RESET_SLEEP_MAX_US	20000
> +
> +struct bcm6345_reset {
> +	struct reset_controller_dev rcdev;
> +	void __iomem *base;
> +	spinlock_t lock;
> +};
> +
> +static int bcm6345_reset_update(struct bcm6345_reset *bcm6345_reset,
> +				unsigned long id, bool assert)
> +{
> +	uint32_t val;
> +
> +	val = __raw_readl(bcm6345_reset->base);
> +	if (assert)
> +		val &= ~BIT(id);
> +	else
> +		val |= BIT(id);
> +	__raw_writel(val, bcm6345_reset->base);
> +
> +	return 0;
> +}
> +
> +static int bcm6345_reset_assert(struct reset_controller_dev *rcdev,
> +				unsigned long id)
> +{
> +	struct bcm6345_reset *bcm6345_reset =
> +		container_of(rcdev, struct bcm6345_reset, rcdev);
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
> +	bcm6345_reset_update(bcm6345_reset, id, true);
> +	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
> +
> +	return 0;
> +}
> +
> +static int bcm6345_reset_deassert(struct reset_controller_dev *rcdev,
> +				  unsigned long id)
> +{
> +	struct bcm6345_reset *bcm6345_reset =
> +		container_of(rcdev, struct bcm6345_reset, rcdev);
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
> +	bcm6345_reset_update(bcm6345_reset, id, false);
> +	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
> +
> +	return 0;
> +}
> +
> +static int bcm6345_reset_reset(struct reset_controller_dev *rcdev,
> +			       unsigned long id)
> +{
> +	struct bcm6345_reset *bcm6345_reset =
> +		container_of(rcdev, struct bcm6345_reset, rcdev);
> +	unsigned long flags;
> +
> +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
> +	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
> +		     BCM6345_RESET_SLEEP_MAX_US);

What is the purpose of sleeping before reset assertion?

If you can do without this, with I think this driver could be made to
use reset-simple.

regards
Philipp

Re: [PATCH 3/7] reset: add BCM6345 reset controller driver

[Álvaro Fernández Rojas]

Hi Philipp,

> El 9 jun 2020, a las 17:06, Philipp Zabel <p.zabel@pengutronix.de> escribió:
> 
> Hi Álvaro,
> 
> On Tue, 2020-06-09 at 15:42 +0200, Álvaro Fernández Rojas wrote:
>> Add support for resetting blocks through the Linux reset controller
>> subsystem for BCM63xx SoCs.
>> 
>> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
>> ---
>> drivers/reset/Kconfig         |   7 ++
>> drivers/reset/Makefile        |   1 +
>> drivers/reset/reset-bcm6345.c | 149 ++++++++++++++++++++++++++++++++++
>> 3 files changed, 157 insertions(+)
>> create mode 100644 drivers/reset/reset-bcm6345.c
>> 
>> diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
>> index d9efbfd29646..9f1da978cef6 100644
>> --- a/drivers/reset/Kconfig
>> +++ b/drivers/reset/Kconfig
>> @@ -41,6 +41,13 @@ config RESET_BERLIN
>> 	help
>> 	  This enables the reset controller driver for Marvell Berlin SoCs.
>> 
>> +config RESET_BCM6345
>> +	bool "BCM6345 Reset Controller"
>> +	depends on BMIPS_GENERIC || COMPILE_TEST
>> +	default BMIPS_GENERIC
>> +	help
>> +	  This enables the reset controller driver for BCM6345 SoCs.
>> +
>> config RESET_BRCMSTB
>> 	tristate "Broadcom STB reset controller"
>> 	depends on ARCH_BRCMSTB || COMPILE_TEST
>> diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
>> index 249ed357c997..e642aae42f0f 100644
>> --- a/drivers/reset/Makefile
>> +++ b/drivers/reset/Makefile
>> @@ -6,6 +6,7 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/
>> obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
>> obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
>> obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
>> +obj-$(CONFIG_RESET_BCM6345) += reset-bcm6345.o
>> obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
>> obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
>> obj-$(CONFIG_RESET_BRCMSTB_RESCAL) += reset-brcmstb-rescal.o
>> diff --git a/drivers/reset/reset-bcm6345.c b/drivers/reset/reset-bcm6345.c
>> new file mode 100644
>> index 000000000000..088b7fdb896b
>> --- /dev/null
>> +++ b/drivers/reset/reset-bcm6345.c
>> @@ -0,0 +1,149 @@
>> +// SPDX-License-Identifier: GPL-2.0-or-later
>> +/*
>> + * BCM6345 Reset Controller Driver
>> + *
>> + * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com>
>> + */
>> +
>> +#include <linux/delay.h>
>> +#include <linux/init.h>
>> +#include <linux/io.h>
>> +#include <linux/mod_devicetable.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/reset-controller.h>
>> +
>> +#define BCM6345_RESET_NUM		32
>> +#define BCM6345_RESET_SLEEP_MIN_US	10000
>> +#define BCM6345_RESET_SLEEP_MAX_US	20000
>> +
>> +struct bcm6345_reset {
>> +	struct reset_controller_dev rcdev;
>> +	void __iomem *base;
>> +	spinlock_t lock;
>> +};
>> +
>> +static int bcm6345_reset_update(struct bcm6345_reset *bcm6345_reset,
>> +				unsigned long id, bool assert)
>> +{
>> +	uint32_t val;
>> +
>> +	val = __raw_readl(bcm6345_reset->base);
>> +	if (assert)
>> +		val &= ~BIT(id);
>> +	else
>> +		val |= BIT(id);
>> +	__raw_writel(val, bcm6345_reset->base);
>> +
>> +	return 0;
>> +}
>> +
>> +static int bcm6345_reset_assert(struct reset_controller_dev *rcdev,
>> +				unsigned long id)
>> +{
>> +	struct bcm6345_reset *bcm6345_reset =
>> +		container_of(rcdev, struct bcm6345_reset, rcdev);
>> +	unsigned long flags;
>> +
>> +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
>> +	bcm6345_reset_update(bcm6345_reset, id, true);
>> +	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
>> +
>> +	return 0;
>> +}
>> +
>> +static int bcm6345_reset_deassert(struct reset_controller_dev *rcdev,
>> +				  unsigned long id)
>> +{
>> +	struct bcm6345_reset *bcm6345_reset =
>> +		container_of(rcdev, struct bcm6345_reset, rcdev);
>> +	unsigned long flags;
>> +
>> +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
>> +	bcm6345_reset_update(bcm6345_reset, id, false);
>> +	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
>> +
>> +	return 0;
>> +}
>> +
>> +static int bcm6345_reset_reset(struct reset_controller_dev *rcdev,
>> +			       unsigned long id)
>> +{
>> +	struct bcm6345_reset *bcm6345_reset =
>> +		container_of(rcdev, struct bcm6345_reset, rcdev);
>> +	unsigned long flags;
>> +
>> +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
>> +	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
>> +		     BCM6345_RESET_SLEEP_MAX_US);
> 
> What is the purpose of sleeping before reset assertion?

None, I must have introduced that for testing something and then I forgot to remove it. Sorry for that...

> 
> If you can do without this, with I think this driver could be made to
> use reset-simple.

Yes, but only if I can add reset support with a configurable sleep range to reset-simple. Is this possible?

> 
> regards
> Philipp

Best regards,
Álvaro.

[PATCH v2 0/7] bmips: add bcm6345 reset controller support

[Álvaro Fernández Rojas]

BCM63xx SoCs have a reset controller for certain components.

v2: add compatibility to reset-simple instead of adding a new driver.

Álvaro Fernández Rojas (7):
  mips: bmips: select ARCH_HAS_RESET_CONTROLLER
  dt-bindings: reset: add BCM6345 reset controller bindings
  drivers: reset: simple: add BCM6345 reset support
  mips: bmips: dts: add BCM6328 reset controller support
  mips: bmips: dts: add BCM6358 reset controller support
  mips: bmips: dts: add BCM6362 reset controller support
  mips: bmips: dts: add BCM6368 reset controller support

 .../bindings/reset/brcm,bcm6345-reset.yaml    | 37 +++++++++++++++++++
 arch/mips/Kconfig                             |  1 +
 arch/mips/boot/dts/brcm/bcm6328.dtsi          |  6 +++
 arch/mips/boot/dts/brcm/bcm6358.dtsi          |  6 +++
 arch/mips/boot/dts/brcm/bcm6362.dtsi          |  6 +++
 arch/mips/boot/dts/brcm/bcm6368.dtsi          |  6 +++
 drivers/reset/Kconfig                         |  3 +-
 drivers/reset/reset-simple.c                  |  1 +
 8 files changed, 65 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml

-- 
2.26.2

[PATCH v2 1/7] mips: bmips: select ARCH_HAS_RESET_CONTROLLER

[Álvaro Fernández Rojas]

This allows to add reset controllers support.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v2: no changes

 arch/mips/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 9dc08ee3d6b9..e82586e7719c 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -229,6 +229,7 @@ config ATH79
 
 config BMIPS_GENERIC
 	bool "Broadcom Generic BMIPS kernel"
+	select ARCH_HAS_RESET_CONTROLLER
 	select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
 	select ARCH_HAS_PHYS_TO_DMA
 	select BOOT_RAW
-- 
2.26.2

[PATCH v2 2/7] dt-bindings: reset: add BCM6345 reset controller bindings

[Álvaro Fernández Rojas]

Add support for resetting blocks through the Linux reset controller
subsystem for BCM63xx SoCs.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v2: no changes

 .../bindings/reset/brcm,bcm6345-reset.yaml    | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml

diff --git a/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml b/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
new file mode 100644
index 000000000000..eb3f2182e631
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/reset/brcm,bcm6345-reset.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: BCM6345 reset controller
+
+description: This document describes the BCM6345 reset controller.
+
+maintainers:
+  - Álvaro Fernández Rojas <noltari@gmail.com>
+
+properties:
+  compatible:
+    const: brcm,bcm6345-reset
+
+  reg:
+    maxItems: 2
+
+  "#reset-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    reset-controller@10000010 {
+      compatible = "brcm,bcm6345-reset";
+      reg = <0x10000010 0x4>;
+      #reset-cells = <1>;
+    };
-- 
2.26.2

[PATCH v2 3/7] drivers: reset: simple: add BCM6345 reset support

[Álvaro Fernández Rojas]

Add support for resetting blocks through the Linux reset controller
subsystem for BCM63xx SoCs.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v2: add compatibility to reset-simple instead of adding a new driver.

 drivers/reset/Kconfig        | 3 ++-
 drivers/reset/reset-simple.c | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index d9efbfd29646..84d29b585e9b 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -153,7 +153,7 @@ config RESET_SCMI
 
 config RESET_SIMPLE
 	bool "Simple Reset Controller Driver" if COMPILE_TEST
-	default ARCH_AGILEX || ARCH_ASPEED || ARCH_BITMAIN || ARCH_REALTEK || ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX || ARC
+	default ARCH_AGILEX || ARCH_ASPEED || ARCH_BITMAIN || ARCH_REALTEK || ARCH_STM32 || ARCH_STRATIX10 || ARCH_SUNXI || ARCH_ZX || ARC || BMIPS_GENERIC
 	help
 	  This enables a simple reset controller driver for reset lines that
 	  that can be asserted and deasserted by toggling bits in a contiguous,
@@ -163,6 +163,7 @@ config RESET_SIMPLE
 	   - Altera SoCFPGAs
 	   - ASPEED BMC SoCs
 	   - Bitmain BM1880 SoC
+	   - BMIPS (BCM6345)
 	   - Realtek SoCs
 	   - RCC reset controller in STM32 MCUs
 	   - Allwinner SoCs
diff --git a/drivers/reset/reset-simple.c b/drivers/reset/reset-simple.c
index 067e7e7b34f1..c00bb65c0b70 100644
--- a/drivers/reset/reset-simple.c
+++ b/drivers/reset/reset-simple.c
@@ -118,6 +118,7 @@ static const struct reset_simple_devdata reset_simple_active_low = {
 static const struct of_device_id reset_simple_dt_ids[] = {
 	{ .compatible = "altr,stratix10-rst-mgr",
 		.data = &reset_simple_socfpga },
+	{ .compatible = "brcm,bcm6345-reset" },
 	{ .compatible = "st,stm32-rcc", },
 	{ .compatible = "allwinner,sun6i-a31-clock-reset",
 		.data = &reset_simple_active_low },
-- 
2.26.2

[PATCH v2 4/7] mips: bmips: dts: add BCM6328 reset controller support

[Álvaro Fernández Rojas]

BCM6328 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6328.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/mips/boot/dts/brcm/bcm6328.dtsi b/arch/mips/boot/dts/brcm/bcm6328.dtsi
index af860d06def6..590118cf5c12 100644
--- a/arch/mips/boot/dts/brcm/bcm6328.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6328.dtsi
@@ -57,6 +57,12 @@ clkctl: clock-controller@10000004 {
 			#clock-cells = <1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
-- 
2.26.2

[PATCH v2 5/7] mips: bmips: dts: add BCM6358 reset controller support

[Álvaro Fernández Rojas]

BCM6358 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6358.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/mips/boot/dts/brcm/bcm6358.dtsi b/arch/mips/boot/dts/brcm/bcm6358.dtsi
index f21176cac038..9d93e7f5e6fc 100644
--- a/arch/mips/boot/dts/brcm/bcm6358.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6358.dtsi
@@ -82,6 +82,12 @@ periph_intc: interrupt-controller@fffe000c {
 			interrupts = <2>, <3>;
 		};
 
+		periph_rst: reset-controller@fffe0034 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0xfffe0034 0x4>;
+			#reset-cells = <1>;
+		};
+
 		leds0: led-controller@fffe00d0 {
 			#address-cells = <1>;
 			#size-cells = <0>;
-- 
2.26.2

[PATCH v2 6/7] mips: bmips: dts: add BCM6362 reset controller support

[Álvaro Fernández Rojas]

BCM6362 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6362.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/mips/boot/dts/brcm/bcm6362.dtsi b/arch/mips/boot/dts/brcm/bcm6362.dtsi
index 8ae6981735b8..443af6b4c838 100644
--- a/arch/mips/boot/dts/brcm/bcm6362.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6362.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
-- 
2.26.2

[PATCH v2 7/7] mips: bmips: dts: add BCM6368 reset controller support

[Álvaro Fernández Rojas]

BCM6368 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6368.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/mips/boot/dts/brcm/bcm6368.dtsi b/arch/mips/boot/dts/brcm/bcm6368.dtsi
index 449c167dd892..52c19f40b9cc 100644
--- a/arch/mips/boot/dts/brcm/bcm6368.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6368.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
-- 
2.26.2

Re: [PATCH 3/7] reset: add BCM6345 reset controller driver

[Philipp Zabel]

Hi Álvaro,

On Tue, 2020-06-09 at 17:14 +0200, Álvaro Fernández Rojas wrote:
> Hi Philipp,
> 
> > El 9 jun 2020, a las 17:06, Philipp Zabel <p.zabel@pengutronix.de> escribió:
> > 
> > Hi Álvaro,
> > 
> > On Tue, 2020-06-09 at 15:42 +0200, Álvaro Fernández Rojas wrote:
> > > Add support for resetting blocks through the Linux reset controller
> > > subsystem for BCM63xx SoCs.
> > > 
> > > Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
> > > ---
> > > drivers/reset/Kconfig         |   7 ++
> > > drivers/reset/Makefile        |   1 +
> > > drivers/reset/reset-bcm6345.c | 149 ++++++++++++++++++++++++++++++++++
> > > 3 files changed, 157 insertions(+)
> > > create mode 100644 drivers/reset/reset-bcm6345.c
> > > 
> > > diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
> > > index d9efbfd29646..9f1da978cef6 100644
> > > --- a/drivers/reset/Kconfig
> > > +++ b/drivers/reset/Kconfig
> > > @@ -41,6 +41,13 @@ config RESET_BERLIN
> > > 	help
> > > 	  This enables the reset controller driver for Marvell Berlin SoCs.
> > > 
> > > +config RESET_BCM6345
> > > +	bool "BCM6345 Reset Controller"
> > > +	depends on BMIPS_GENERIC || COMPILE_TEST
> > > +	default BMIPS_GENERIC
> > > +	help
> > > +	  This enables the reset controller driver for BCM6345 SoCs.
> > > +
> > > config RESET_BRCMSTB
> > > 	tristate "Broadcom STB reset controller"
> > > 	depends on ARCH_BRCMSTB || COMPILE_TEST
> > > diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
> > > index 249ed357c997..e642aae42f0f 100644
> > > --- a/drivers/reset/Makefile
> > > +++ b/drivers/reset/Makefile
> > > @@ -6,6 +6,7 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/
> > > obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
> > > obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
> > > obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
> > > +obj-$(CONFIG_RESET_BCM6345) += reset-bcm6345.o
> > > obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
> > > obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
> > > obj-$(CONFIG_RESET_BRCMSTB_RESCAL) += reset-brcmstb-rescal.o
> > > diff --git a/drivers/reset/reset-bcm6345.c b/drivers/reset/reset-bcm6345.c
> > > new file mode 100644
> > > index 000000000000..088b7fdb896b
> > > --- /dev/null
> > > +++ b/drivers/reset/reset-bcm6345.c
> > > @@ -0,0 +1,149 @@
> > > +// SPDX-License-Identifier: GPL-2.0-or-later
> > > +/*
> > > + * BCM6345 Reset Controller Driver
> > > + *
> > > + * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com>
> > > + */
> > > +
> > > +#include <linux/delay.h>
> > > +#include <linux/init.h>
> > > +#include <linux/io.h>
> > > +#include <linux/mod_devicetable.h>
> > > +#include <linux/platform_device.h>
> > > +#include <linux/reset-controller.h>
> > > +
> > > +#define BCM6345_RESET_NUM		32
> > > +#define BCM6345_RESET_SLEEP_MIN_US	10000
> > > +#define BCM6345_RESET_SLEEP_MAX_US	20000
> > > +
> > > +struct bcm6345_reset {
> > > +	struct reset_controller_dev rcdev;
> > > +	void __iomem *base;
> > > +	spinlock_t lock;
> > > +};
> > > +
> > > +static int bcm6345_reset_update(struct bcm6345_reset *bcm6345_reset,
> > > +				unsigned long id, bool assert)
> > > +{
> > > +	uint32_t val;
> > > +
> > > +	val = __raw_readl(bcm6345_reset->base);
> > > +	if (assert)
> > > +		val &= ~BIT(id);
> > > +	else
> > > +		val |= BIT(id);
> > > +	__raw_writel(val, bcm6345_reset->base);
> > > +
> > > +	return 0;
> > > +}
> > > +
> > > +static int bcm6345_reset_assert(struct reset_controller_dev *rcdev,
> > > +				unsigned long id)
> > > +{
> > > +	struct bcm6345_reset *bcm6345_reset =
> > > +		container_of(rcdev, struct bcm6345_reset, rcdev);
> > > +	unsigned long flags;
> > > +
> > > +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
> > > +	bcm6345_reset_update(bcm6345_reset, id, true);
> > > +	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
> > > +
> > > +	return 0;
> > > +}
> > > +
> > > +static int bcm6345_reset_deassert(struct reset_controller_dev *rcdev,
> > > +				  unsigned long id)
> > > +{
> > > +	struct bcm6345_reset *bcm6345_reset =
> > > +		container_of(rcdev, struct bcm6345_reset, rcdev);
> > > +	unsigned long flags;
> > > +
> > > +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
> > > +	bcm6345_reset_update(bcm6345_reset, id, false);
> > > +	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
> > > +
> > > +	return 0;
> > > +}
> > > +
> > > +static int bcm6345_reset_reset(struct reset_controller_dev *rcdev,
> > > +			       unsigned long id)
> > > +{
> > > +	struct bcm6345_reset *bcm6345_reset =
> > > +		container_of(rcdev, struct bcm6345_reset, rcdev);
> > > +	unsigned long flags;
> > > +
> > > +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
> > > +	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
> > > +		     BCM6345_RESET_SLEEP_MAX_US);
> > 
> > What is the purpose of sleeping before reset assertion?
> 
> None, I must have introduced that for testing something and then I forgot to remove it. Sorry for that...
> 
> > If you can do without this, with I think this driver could be made to
> > use reset-simple.
> 
> Yes, but only if I can add reset support with a configurable sleep range to reset-simple. Is this possible?

I should have mentioned, support for this is on the reset/next branch:

  git://git.pengutronix.de/pza/linux.git reset/next

regards
Philipp

Re: [PATCH 3/7] reset: add BCM6345 reset controller driver

[Álvaro Fernández Rojas]

Hello Philipp,

> El 9 jun 2020, a las 18:32, Philipp Zabel <p.zabel@pengutronix.de> escribió:
> 
> Hi Álvaro,
> 
> On Tue, 2020-06-09 at 17:14 +0200, Álvaro Fernández Rojas wrote:
>> Hi Philipp,
>> 
>>> El 9 jun 2020, a las 17:06, Philipp Zabel <p.zabel@pengutronix.de> escribió:
>>> 
>>> Hi Álvaro,
>>> 
>>> On Tue, 2020-06-09 at 15:42 +0200, Álvaro Fernández Rojas wrote:
>>>> Add support for resetting blocks through the Linux reset controller
>>>> subsystem for BCM63xx SoCs.
>>>> 
>>>> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
>>>> ---
>>>> drivers/reset/Kconfig         |   7 ++
>>>> drivers/reset/Makefile        |   1 +
>>>> drivers/reset/reset-bcm6345.c | 149 ++++++++++++++++++++++++++++++++++
>>>> 3 files changed, 157 insertions(+)
>>>> create mode 100644 drivers/reset/reset-bcm6345.c
>>>> 
>>>> diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
>>>> index d9efbfd29646..9f1da978cef6 100644
>>>> --- a/drivers/reset/Kconfig
>>>> +++ b/drivers/reset/Kconfig
>>>> @@ -41,6 +41,13 @@ config RESET_BERLIN
>>>> 	help
>>>> 	  This enables the reset controller driver for Marvell Berlin SoCs.
>>>> 
>>>> +config RESET_BCM6345
>>>> +	bool "BCM6345 Reset Controller"
>>>> +	depends on BMIPS_GENERIC || COMPILE_TEST
>>>> +	default BMIPS_GENERIC
>>>> +	help
>>>> +	  This enables the reset controller driver for BCM6345 SoCs.
>>>> +
>>>> config RESET_BRCMSTB
>>>> 	tristate "Broadcom STB reset controller"
>>>> 	depends on ARCH_BRCMSTB || COMPILE_TEST
>>>> diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
>>>> index 249ed357c997..e642aae42f0f 100644
>>>> --- a/drivers/reset/Makefile
>>>> +++ b/drivers/reset/Makefile
>>>> @@ -6,6 +6,7 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/
>>>> obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
>>>> obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
>>>> obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
>>>> +obj-$(CONFIG_RESET_BCM6345) += reset-bcm6345.o
>>>> obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
>>>> obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
>>>> obj-$(CONFIG_RESET_BRCMSTB_RESCAL) += reset-brcmstb-rescal.o
>>>> diff --git a/drivers/reset/reset-bcm6345.c b/drivers/reset/reset-bcm6345.c
>>>> new file mode 100644
>>>> index 000000000000..088b7fdb896b
>>>> --- /dev/null
>>>> +++ b/drivers/reset/reset-bcm6345.c
>>>> @@ -0,0 +1,149 @@
>>>> +// SPDX-License-Identifier: GPL-2.0-or-later
>>>> +/*
>>>> + * BCM6345 Reset Controller Driver
>>>> + *
>>>> + * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com>
>>>> + */
>>>> +
>>>> +#include <linux/delay.h>
>>>> +#include <linux/init.h>
>>>> +#include <linux/io.h>
>>>> +#include <linux/mod_devicetable.h>
>>>> +#include <linux/platform_device.h>
>>>> +#include <linux/reset-controller.h>
>>>> +
>>>> +#define BCM6345_RESET_NUM		32
>>>> +#define BCM6345_RESET_SLEEP_MIN_US	10000
>>>> +#define BCM6345_RESET_SLEEP_MAX_US	20000
>>>> +
>>>> +struct bcm6345_reset {
>>>> +	struct reset_controller_dev rcdev;
>>>> +	void __iomem *base;
>>>> +	spinlock_t lock;
>>>> +};
>>>> +
>>>> +static int bcm6345_reset_update(struct bcm6345_reset *bcm6345_reset,
>>>> +				unsigned long id, bool assert)
>>>> +{
>>>> +	uint32_t val;
>>>> +
>>>> +	val = __raw_readl(bcm6345_reset->base);
>>>> +	if (assert)
>>>> +		val &= ~BIT(id);
>>>> +	else
>>>> +		val |= BIT(id);
>>>> +	__raw_writel(val, bcm6345_reset->base);
>>>> +
>>>> +	return 0;
>>>> +}
>>>> +
>>>> +static int bcm6345_reset_assert(struct reset_controller_dev *rcdev,
>>>> +				unsigned long id)
>>>> +{
>>>> +	struct bcm6345_reset *bcm6345_reset =
>>>> +		container_of(rcdev, struct bcm6345_reset, rcdev);
>>>> +	unsigned long flags;
>>>> +
>>>> +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
>>>> +	bcm6345_reset_update(bcm6345_reset, id, true);
>>>> +	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
>>>> +
>>>> +	return 0;
>>>> +}
>>>> +
>>>> +static int bcm6345_reset_deassert(struct reset_controller_dev *rcdev,
>>>> +				  unsigned long id)
>>>> +{
>>>> +	struct bcm6345_reset *bcm6345_reset =
>>>> +		container_of(rcdev, struct bcm6345_reset, rcdev);
>>>> +	unsigned long flags;
>>>> +
>>>> +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
>>>> +	bcm6345_reset_update(bcm6345_reset, id, false);
>>>> +	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
>>>> +
>>>> +	return 0;
>>>> +}
>>>> +
>>>> +static int bcm6345_reset_reset(struct reset_controller_dev *rcdev,
>>>> +			       unsigned long id)
>>>> +{
>>>> +	struct bcm6345_reset *bcm6345_reset =
>>>> +		container_of(rcdev, struct bcm6345_reset, rcdev);
>>>> +	unsigned long flags;
>>>> +
>>>> +	spin_lock_irqsave(&bcm6345_reset->lock, flags);
>>>> +	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
>>>> +		     BCM6345_RESET_SLEEP_MAX_US);
>>> 
>>> What is the purpose of sleeping before reset assertion?
>> 
>> None, I must have introduced that for testing something and then I forgot to remove it. Sorry for that...
>> 
>>> If you can do without this, with I think this driver could be made to
>>> use reset-simple.
>> 
>> Yes, but only if I can add reset support with a configurable sleep range to reset-simple. Is this possible?
> 
> I should have mentioned, support for this is on the reset/next branch:
> 
>  git://git.pengutronix.de/pza/linux.git reset/next

Yes, but reset_us was only added to reset_simple_data, so there’s no way to fill that value from reset_simple_devdata or device tree, right?

> 
> regards
> Philipp

Regards,
Álvaro.

Re: [PATCH 3/7] reset: add BCM6345 reset controller driver

[Florian Fainelli]

On 6/9/2020 9:41 AM, Álvaro Fernández Rojas wrote:
>>>> If you can do without this, with I think this driver could be made to
>>>> use reset-simple.
>>>
>>> Yes, but only if I can add reset support with a configurable sleep range to reset-simple. Is this possible?
>>
>> I should have mentioned, support for this is on the reset/next branch:
>>
>>  git://git.pengutronix.de/pza/linux.git reset/next
> 
> Yes, but reset_us was only added to reset_simple_data, so there’s no way to fill that value from reset_simple_devdata or device tree, right?

Not that I can see, but you could certainly extend it here:

if (devdata) {
		reg_offset = devdata->reg_offset;
		if (devdata->nr_resets)
			data->rcdev.nr_resets = devdata->nr_resets;
		data->active_low = devdata->active_low;
		data->status_active_low = devdata->status_active_low;
	}

and have an appropriate devdata structure be provided for your
compatible string:

+	{ .compatible = "brcm,bcm6345-reset", .data = bcm6345_reset_devdata },
-- 
Florian

Re: [PATCH v2 1/7] mips: bmips: select ARCH_HAS_RESET_CONTROLLER

[Florian Fainelli]

On 6/9/2020 9:02 AM, Álvaro Fernández Rojas wrote:
> This allows to add reset controllers support.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

Acked-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

Re: [PATCH v2 3/7] drivers: reset: simple: add BCM6345 reset support

[Florian Fainelli]

On 6/9/2020 9:02 AM, Álvaro Fernández Rojas wrote:
> Add support for resetting blocks through the Linux reset controller
> subsystem for BCM63xx SoCs.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

This looks good to me, however in v1 there was a need for sleeping after
the reset assertion, and this does not appear to be taken care of by
default by reset-simple.c, did you determine the delay not to be necessary?
-- 
Florian

Re: [PATCH v2 4/7] mips: bmips: dts: add BCM6328 reset controller support

[Florian Fainelli]

On 6/9/2020 9:02 AM, Álvaro Fernández Rojas wrote:
> BCM6328 SoCs have a reset controller for certain components.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

Acked-by: Florian Fainelli <f.fainelli@gmail.com>

You should probably create include files under include/dt-bindings/
which designate the various reset control bits that are valid for a
given SoC.
-- 
Florian

Re: [PATCH v2 5/7] mips: bmips: dts: add BCM6358 reset controller support

[Florian Fainelli]

On 6/9/2020 9:02 AM, Álvaro Fernández Rojas wrote:
> BCM6358 SoCs have a reset controller for certain components.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

Acked-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

Re: [PATCH v2 7/7] mips: bmips: dts: add BCM6368 reset controller support

[Florian Fainelli]

On 6/9/2020 9:02 AM, Álvaro Fernández Rojas wrote:
> BCM6368 SoCs have a reset controller for certain components.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

Acked-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

Re: [PATCH v2 6/7] mips: bmips: dts: add BCM6362 reset controller support

[Florian Fainelli]

On 6/9/2020 9:02 AM, Álvaro Fernández Rojas wrote:
> BCM6362 SoCs have a reset controller for certain components.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

Acked-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

Re: [PATCH v2 2/7] dt-bindings: reset: add BCM6345 reset controller bindings

[Florian Fainelli]

On 6/9/2020 9:02 AM, Álvaro Fernández Rojas wrote:
> Add support for resetting blocks through the Linux reset controller
> subsystem for BCM63xx SoCs.

The commit message should be paraphrasing part of your binding content,
not necessarily describing why this is useful.

This looks good to me though:

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

Re: [PATCH v2 4/7] mips: bmips: dts: add BCM6328 reset controller support

[Álvaro Fernández Rojas]

Hi Florian,

> El 10 jun 2020, a las 3:08, Florian Fainelli <f.fainelli@gmail.com> escribió:
> 
> 
> 
> On 6/9/2020 9:02 AM, Álvaro Fernández Rojas wrote:
>> BCM6328 SoCs have a reset controller for certain components.
>> 
>> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
> 
> Acked-by: Florian Fainelli <f.fainelli@gmail.com>
> 
> You should probably create include files under include/dt-bindings/
> which designate the various reset control bits that are valid for a
> given SoC.

I will do that in v3.

> -- 
> Florian

Re: [PATCH v2 3/7] drivers: reset: simple: add BCM6345 reset support

[Álvaro Fernández Rojas]

Hi Florian,

> El 10 jun 2020, a las 3:05, Florian Fainelli <f.fainelli@gmail.com> escribió:
> 
> 
> 
> On 6/9/2020 9:02 AM, Álvaro Fernández Rojas wrote:
>> Add support for resetting blocks through the Linux reset controller
>> subsystem for BCM63xx SoCs.
>> 
>> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
> 
> This looks good to me, however in v1 there was a need for sleeping after
> the reset assertion, and this does not appear to be taken care of by
> default by reset-simple.c, did you determine the delay not to be necessary?

Let me do some more tests to determine if it’s really needed.

> -- 
> Florian

Re: [PATCH 3/7] reset: add BCM6345 reset controller driver

[Álvaro Fernández Rojas]

Hi Florian,

> El 9 jun 2020, a las 22:17, Florian Fainelli <f.fainelli@gmail.com> escribió:
> 
> 
> 
> On 6/9/2020 9:41 AM, Álvaro Fernández Rojas wrote:
>>>>> If you can do without this, with I think this driver could be made to
>>>>> use reset-simple.
>>>> 
>>>> Yes, but only if I can add reset support with a configurable sleep range to reset-simple. Is this possible?
>>> 
>>> I should have mentioned, support for this is on the reset/next branch:
>>> 
>>> git://git.pengutronix.de/pza/linux.git reset/next
>> 
>> Yes, but reset_us was only added to reset_simple_data, so there’s no way to fill that value from reset_simple_devdata or device tree, right?
> 
> Not that I can see, but you could certainly extend it here:
> 
> if (devdata) {
> 		reg_offset = devdata->reg_offset;
> 		if (devdata->nr_resets)
> 			data->rcdev.nr_resets = devdata->nr_resets;
> 		data->active_low = devdata->active_low;
> 		data->status_active_low = devdata->status_active_low;
> 	}

Yes, I would extend it there too, but I was just saying that it’s a bit strange that it was only added to reset_simple_data without any way to fill the value.

> 
> and have an appropriate devdata structure be provided for your
> compatible string:
> 
> +	{ .compatible = "brcm,bcm6345-reset", .data = bcm6345_reset_devdata },
> -- 
> Florian

Regards,
Álvaro.

Re: [PATCH 3/7] reset: add BCM6345 reset controller driver

[Philipp Zabel]

Hi Álvaro,

On Wed, 2020-06-10 at 08:08 +0200, Álvaro Fernández Rojas wrote:
> Hi Florian,
> 
> > El 9 jun 2020, a las 22:17, Florian Fainelli <f.fainelli@gmail.com> escribió:
> > 
> > 
> > 
> > On 6/9/2020 9:41 AM, Álvaro Fernández Rojas wrote:
> > > > > > If you can do without this, with I think this driver could be made to
> > > > > > use reset-simple.
> > > > > 
> > > > > Yes, but only if I can add reset support with a configurable sleep range to reset-simple. Is this possible?
> > > > 
> > > > I should have mentioned, support for this is on the reset/next branch:
> > > > 
> > > > git://git.pengutronix.de/pza/linux.git reset/next
> > > 
> > > Yes, but reset_us was only added to reset_simple_data, so there’s no way to fill that value from reset_simple_devdata or device tree, right?
> > 
> > Not that I can see, but you could certainly extend it here:
> > 
> > if (devdata) {
> > 		reg_offset = devdata->reg_offset;
> > 		if (devdata->nr_resets)
> > 			data->rcdev.nr_resets = devdata->nr_resets;
> > 		data->active_low = devdata->active_low;
> > 		data->status_active_low = devdata->status_active_low;
> > 	}
> 
> Yes, I would extend it there too,

You are right, reset_us is missing from reset_simple_devdata.

> but I was just saying that it’s a bit strange that it was only added
> to reset_simple_data without any way to fill the value.

The patch was added for the benefit of drivers that register their own
reset controller using reset_simple_data/ops, like sunxi or socfpga.
This might be considered an oversight, but until now there was no user
inside reset-simple.c.

regards
Philipp

[PATCH v3 0/9] bmips: add bcm6345 reset controller support

[Álvaro Fernández Rojas]

BCM63xx SoCs have a reset controller for certain components.

v3: using reset-simple isn't possible since sleeping after performing the
    reset is also needed.
    Add BCM63268 and BCM6318 support.
v2: add compatibility to reset-simple instead of adding a new driver.

Álvaro Fernández Rojas (9):
  mips: bmips: select ARCH_HAS_RESET_CONTROLLER
  dt-bindings: reset: add BCM6345 reset controller bindings
  reset: add BCM6345 reset controller driver
  mips: bmips: dts: add BCM6328 reset controller support
  mips: bmips: dts: add BCM6358 reset controller support
  mips: bmips: dts: add BCM6362 reset controller support
  mips: bmips: dts: add BCM6368 reset controller support
  mips: bmips: dts: add BCM63268 reset controller support
  mips: bmips: add BCM6318 reset controller definitions

 .../bindings/reset/brcm,bcm6345-reset.yaml    |  37 +++++
 arch/mips/Kconfig                             |   1 +
 arch/mips/boot/dts/brcm/bcm63268.dtsi         |   6 +
 arch/mips/boot/dts/brcm/bcm6328.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6358.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6362.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6368.dtsi          |   6 +
 drivers/reset/Kconfig                         |   7 +
 drivers/reset/Makefile                        |   1 +
 drivers/reset/reset-bcm6345.c                 | 135 ++++++++++++++++++
 include/dt-bindings/reset/bcm6318-reset.h     |  20 +++
 include/dt-bindings/reset/bcm63268-reset.h    |  26 ++++
 include/dt-bindings/reset/bcm6328-reset.h     |  18 +++
 include/dt-bindings/reset/bcm6358-reset.h     |  15 ++
 include/dt-bindings/reset/bcm6362-reset.h     |  22 +++
 include/dt-bindings/reset/bcm6368-reset.h     |  16 +++
 16 files changed, 328 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
 create mode 100644 drivers/reset/reset-bcm6345.c
 create mode 100644 include/dt-bindings/reset/bcm6318-reset.h
 create mode 100644 include/dt-bindings/reset/bcm63268-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6328-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6358-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6362-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6368-reset.h

-- 
2.26.2

[PATCH v3 1/9] mips: bmips: select ARCH_HAS_RESET_CONTROLLER

[Álvaro Fernández Rojas]

This allows to add reset controllers support.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v3: no changes
 v2: no changes

 arch/mips/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 9dc08ee3d6b9..e82586e7719c 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -229,6 +229,7 @@ config ATH79
 
 config BMIPS_GENERIC
 	bool "Broadcom Generic BMIPS kernel"
+	select ARCH_HAS_RESET_CONTROLLER
 	select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
 	select ARCH_HAS_PHYS_TO_DMA
 	select BOOT_RAW
-- 
2.26.2

[PATCH v3 2/9] dt-bindings: reset: add BCM6345 reset controller bindings

[Álvaro Fernández Rojas]

Add device tree binding documentation for BCM6345 reset controller.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
---
 .../bindings/reset/brcm,bcm6345-reset.yaml    | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml

diff --git a/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml b/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
new file mode 100644
index 000000000000..eb3f2182e631
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/reset/brcm,bcm6345-reset.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: BCM6345 reset controller
+
+description: This document describes the BCM6345 reset controller.
+
+maintainers:
+  - Álvaro Fernández Rojas <noltari@gmail.com>
+
+properties:
+  compatible:
+    const: brcm,bcm6345-reset
+
+  reg:
+    maxItems: 2
+
+  "#reset-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    reset-controller@10000010 {
+      compatible = "brcm,bcm6345-reset";
+      reg = <0x10000010 0x4>;
+      #reset-cells = <1>;
+    };
-- 
2.26.2

[PATCH v3 3/9] reset: add BCM6345 reset controller driver

[Álvaro Fernández Rojas]

Add support for resetting blocks through the Linux reset controller
subsystem for BCM63xx SoCs.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v3: using reset-simple isn't possible since sleeping after performing the
     reset is also needed.
 v2: add compatibility to reset-simple instead of adding a new driver.

 drivers/reset/Kconfig         |   7 ++
 drivers/reset/Makefile        |   1 +
 drivers/reset/reset-bcm6345.c | 135 ++++++++++++++++++++++++++++++++++
 3 files changed, 143 insertions(+)
 create mode 100644 drivers/reset/reset-bcm6345.c

diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index d9efbfd29646..9f1da978cef6 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -41,6 +41,13 @@ config RESET_BERLIN
 	help
 	  This enables the reset controller driver for Marvell Berlin SoCs.
 
+config RESET_BCM6345
+	bool "BCM6345 Reset Controller"
+	depends on BMIPS_GENERIC || COMPILE_TEST
+	default BMIPS_GENERIC
+	help
+	  This enables the reset controller driver for BCM6345 SoCs.
+
 config RESET_BRCMSTB
 	tristate "Broadcom STB reset controller"
 	depends on ARCH_BRCMSTB || COMPILE_TEST
diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index 249ed357c997..e642aae42f0f 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/
 obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
 obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
 obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
+obj-$(CONFIG_RESET_BCM6345) += reset-bcm6345.o
 obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
 obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
 obj-$(CONFIG_RESET_BRCMSTB_RESCAL) += reset-brcmstb-rescal.o
diff --git a/drivers/reset/reset-bcm6345.c b/drivers/reset/reset-bcm6345.c
new file mode 100644
index 000000000000..6c9238762ee5
--- /dev/null
+++ b/drivers/reset/reset-bcm6345.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * BCM6345 Reset Controller Driver
+ *
+ * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+
+#define BCM6345_RESET_NUM		32
+#define BCM6345_RESET_SLEEP_MIN_US	10000
+#define BCM6345_RESET_SLEEP_MAX_US	20000
+
+struct bcm6345_reset {
+	struct reset_controller_dev rcdev;
+	void __iomem *base;
+	spinlock_t lock;
+};
+
+static void bcm6345_reset_update(struct reset_controller_dev *rcdev,
+				 unsigned long id, bool assert)
+{
+	struct bcm6345_reset *bcm6345_reset =
+		container_of(rcdev, struct bcm6345_reset, rcdev);
+	unsigned long flags;
+	uint32_t val;
+
+	spin_lock_irqsave(&bcm6345_reset->lock, flags);
+	val = __raw_readl(bcm6345_reset->base);
+	if (assert)
+		val &= ~BIT(id);
+	else
+		val |= BIT(id);
+	__raw_writel(val, bcm6345_reset->base);
+	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
+}
+
+static int bcm6345_reset_assert(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	bcm6345_reset_update(rcdev, id, true);
+
+	return 0;
+}
+
+static int bcm6345_reset_deassert(struct reset_controller_dev *rcdev,
+				  unsigned long id)
+{
+	bcm6345_reset_update(rcdev, id, false);
+
+	return 0;
+}
+
+static int bcm6345_reset_reset(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	bcm6345_reset_update(rcdev, id, true);
+	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
+		     BCM6345_RESET_SLEEP_MAX_US);
+
+	bcm6345_reset_update(rcdev, id, false);
+	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
+		     BCM6345_RESET_SLEEP_MAX_US);
+
+	return 0;
+}
+
+static int bcm6345_reset_status(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	struct bcm6345_reset *bcm6345_reset =
+		container_of(rcdev, struct bcm6345_reset, rcdev);
+
+	return !(__raw_readl(bcm6345_reset->base) & BIT(id));
+}
+
+static struct reset_control_ops bcm6345_reset_ops = {
+	.assert = bcm6345_reset_assert,
+	.deassert = bcm6345_reset_deassert,
+	.reset = bcm6345_reset_reset,
+	.status = bcm6345_reset_status,
+};
+
+static int __init bcm6345_reset_probe(struct platform_device *pdev)
+{
+	struct bcm6345_reset *bcm6345_reset;
+	struct resource *res;
+	int err;
+
+	bcm6345_reset = devm_kzalloc(&pdev->dev,
+				     sizeof(*bcm6345_reset), GFP_KERNEL);
+	if (!bcm6345_reset)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, bcm6345_reset);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	bcm6345_reset->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(bcm6345_reset->base))
+		return PTR_ERR(bcm6345_reset->base);
+
+	spin_lock_init(&bcm6345_reset->lock);
+	bcm6345_reset->rcdev.ops = &bcm6345_reset_ops;
+	bcm6345_reset->rcdev.owner = THIS_MODULE;
+	bcm6345_reset->rcdev.of_node = pdev->dev.of_node;
+	bcm6345_reset->rcdev.of_reset_n_cells = 1;
+	bcm6345_reset->rcdev.nr_resets = BCM6345_RESET_NUM;
+
+	err = devm_reset_controller_register(&pdev->dev,
+					     &bcm6345_reset->rcdev);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static const struct of_device_id bcm6345_reset_of_match[] = {
+	{ .compatible = "brcm,bcm6345-reset" },
+	{ },
+};
+
+static struct platform_driver bcm6345_reset_driver = {
+	.probe = bcm6345_reset_probe,
+	.driver	= {
+		.name = "bcm6345-reset",
+		.of_match_table = bcm6345_reset_of_match,
+		.suppress_bind_attrs = true,
+	},
+};
+builtin_platform_driver(bcm6345_reset_driver);
-- 
2.26.2

[PATCH v3 4/9] mips: bmips: dts: add BCM6328 reset controller support

[Álvaro Fernández Rojas]

BCM6328 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6328.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6328-reset.h | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6328-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6328.dtsi b/arch/mips/boot/dts/brcm/bcm6328.dtsi
index af860d06def6..590118cf5c12 100644
--- a/arch/mips/boot/dts/brcm/bcm6328.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6328.dtsi
@@ -57,6 +57,12 @@ clkctl: clock-controller@10000004 {
 			#clock-cells = <1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
diff --git a/include/dt-bindings/reset/bcm6328-reset.h b/include/dt-bindings/reset/bcm6328-reset.h
new file mode 100644
index 000000000000..0f3df87d47af
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6328-reset.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6328_H
+#define __DT_BINDINGS_RESET_BCM6328_H
+
+#define BCM6328_RST_SPI		0
+#define BCM6328_RST_EPHY	1
+#define BCM6328_RST_SAR		2
+#define BCM6328_RST_ENETSW	3
+#define BCM6328_RST_USBS	4
+#define BCM6328_RST_USBH	5
+#define BCM6328_RST_PCM		6
+#define BCM6328_RST_PCIE_CORE	7
+#define BCM6328_RST_PCIE	8
+#define BCM6328_RST_PCIE_EXT	9
+#define BCM6328_RST_PCIE_HARD	10
+
+#endif /* __DT_BINDINGS_RESET_BCM6328_H */
-- 
2.26.2

[PATCH v3 5/9] mips: bmips: dts: add BCM6358 reset controller support

[Álvaro Fernández Rojas]

BCM6358 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6358.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6358-reset.h | 15 +++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6358-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6358.dtsi b/arch/mips/boot/dts/brcm/bcm6358.dtsi
index f21176cac038..9d93e7f5e6fc 100644
--- a/arch/mips/boot/dts/brcm/bcm6358.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6358.dtsi
@@ -82,6 +82,12 @@ periph_intc: interrupt-controller@fffe000c {
 			interrupts = <2>, <3>;
 		};
 
+		periph_rst: reset-controller@fffe0034 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0xfffe0034 0x4>;
+			#reset-cells = <1>;
+		};
+
 		leds0: led-controller@fffe00d0 {
 			#address-cells = <1>;
 			#size-cells = <0>;
diff --git a/include/dt-bindings/reset/bcm6358-reset.h b/include/dt-bindings/reset/bcm6358-reset.h
new file mode 100644
index 000000000000..bda62ef84f5a
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6358-reset.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6358_H
+#define __DT_BINDINGS_RESET_BCM6358_H
+
+#define BCM6358_RST_SPI		0
+#define BCM6358_RST_ENET	2
+#define BCM6358_RST_MPI		3
+#define BCM6358_RST_EPHY	6
+#define BCM6358_RST_SAR		7
+#define BCM6358_RST_USBH	12
+#define BCM6358_RST_PCM		13
+#define BCM6358_RST_ADSL	14
+
+#endif /* __DT_BINDINGS_RESET_BCM6358_H */
-- 
2.26.2

[PATCH v3 6/9] mips: bmips: dts: add BCM6362 reset controller support

[Álvaro Fernández Rojas]

BCM6362 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6362.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6362-reset.h | 22 ++++++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6362-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6362.dtsi b/arch/mips/boot/dts/brcm/bcm6362.dtsi
index 8ae6981735b8..443af6b4c838 100644
--- a/arch/mips/boot/dts/brcm/bcm6362.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6362.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
diff --git a/include/dt-bindings/reset/bcm6362-reset.h b/include/dt-bindings/reset/bcm6362-reset.h
new file mode 100644
index 000000000000..7ebb0546e0ab
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6362-reset.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6362_H
+#define __DT_BINDINGS_RESET_BCM6362_H
+
+#define BCM6362_RST_SPI		0
+#define BCM6362_RST_IPSEC	1
+#define BCM6362_RST_EPHY	2
+#define BCM6362_RST_SAR		3
+#define BCM6362_RST_ENETSW	4
+#define BCM6362_RST_USBD	5
+#define BCM6362_RST_USBH	6
+#define BCM6362_RST_PCM		7
+#define BCM6362_RST_PCIE_CORE	8
+#define BCM6362_RST_PCIE	9
+#define BCM6362_RST_PCIE_EXT	10
+#define BCM6362_RST_WLAN_SHIM	11
+#define BCM6362_RST_DDR_PHY	12
+#define BCM6362_RST_FAP		13
+#define BCM6362_RST_WLAN_UBUS	14
+
+#endif /* __DT_BINDINGS_RESET_BCM6362_H */
-- 
2.26.2

[PATCH v3 7/9] mips: bmips: dts: add BCM6368 reset controller support

[Álvaro Fernández Rojas]

BCM6368 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6368.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6368-reset.h | 16 ++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6368-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6368.dtsi b/arch/mips/boot/dts/brcm/bcm6368.dtsi
index 449c167dd892..52c19f40b9cc 100644
--- a/arch/mips/boot/dts/brcm/bcm6368.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6368.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
diff --git a/include/dt-bindings/reset/bcm6368-reset.h b/include/dt-bindings/reset/bcm6368-reset.h
new file mode 100644
index 000000000000..c81d8eb6d173
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6368-reset.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6368_H
+#define __DT_BINDINGS_RESET_BCM6368_H
+
+#define BCM6368_RST_SPI		0
+#define BCM6368_RST_MPI		3
+#define BCM6368_RST_IPSEC	4
+#define BCM6368_RST_EPHY	6
+#define BCM6368_RST_SAR		7
+#define BCM6368_RST_SWITCH	10
+#define BCM6368_RST_USBD	11
+#define BCM6368_RST_USBH	12
+#define BCM6368_RST_PCM		13
+
+#endif /* __DT_BINDINGS_RESET_BCM6368_H */
-- 
2.26.2

[PATCH v3 8/9] mips: bmips: dts: add BCM63268 reset controller support

[Álvaro Fernández Rojas]

BCM63268 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v3: add new path with BCM63268 reset controller support.

 arch/mips/boot/dts/brcm/bcm63268.dtsi      |  6 +++++
 include/dt-bindings/reset/bcm63268-reset.h | 26 ++++++++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm63268-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm63268.dtsi b/arch/mips/boot/dts/brcm/bcm63268.dtsi
index beec24145af7..0150da7e3905 100644
--- a/arch/mips/boot/dts/brcm/bcm63268.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm63268.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x20>,
diff --git a/include/dt-bindings/reset/bcm63268-reset.h b/include/dt-bindings/reset/bcm63268-reset.h
new file mode 100644
index 000000000000..6a6403a4c2d5
--- /dev/null
+++ b/include/dt-bindings/reset/bcm63268-reset.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM63268_H
+#define __DT_BINDINGS_RESET_BCM63268_H
+
+#define BCM63268_RST_SPI	0
+#define BCM63268_RST_IPSEC	1
+#define BCM63268_RST_EPHY	2
+#define BCM63268_RST_SAR	3
+#define BCM63268_RST_ENETSW	4
+#define BCM63268_RST_USBS	5
+#define BCM63268_RST_USBH	6
+#define BCM63268_RST_PCM	7
+#define BCM63268_RST_PCIE_CORE	8
+#define BCM63268_RST_PCIE	9
+#define BCM63268_RST_PCIE_EXT	10
+#define BCM63268_RST_WLAN_SHIM	11
+#define BCM63268_RST_DDR_PHY	12
+#define BCM63268_RST_FAP0	13
+#define BCM63268_RST_WLAN_UBUS	14
+#define BCM63268_RST_DECT	15
+#define BCM63268_RST_FAP1	16
+#define BCM63268_RST_PCIE_HARD	17
+#define BCM63268_RST_GPHY	18
+
+#endif /* __DT_BINDINGS_RESET_BCM63268_H */
-- 
2.26.2

[PATCH v3 9/9] mips: bmips: add BCM6318 reset controller definitions

[Álvaro Fernández Rojas]

BCM6318 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v3: add new path with BCM6318 reset controller definitions.

 include/dt-bindings/reset/bcm6318-reset.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6318-reset.h

diff --git a/include/dt-bindings/reset/bcm6318-reset.h b/include/dt-bindings/reset/bcm6318-reset.h
new file mode 100644
index 000000000000..f4fef7bfb06d
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6318-reset.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6318_H
+#define __DT_BINDINGS_RESET_BCM6318_H
+
+#define BCM6318_RST_SPI		0
+#define BCM6318_RST_EPHY	1
+#define BCM6318_RST_SAR		2
+#define BCM6318_RST_ENETSW	3
+#define BCM6318_RST_USBD	4
+#define BCM6318_RST_USBH	5
+#define BCM6318_RST_PCIE_CORE	6
+#define BCM6318_RST_PCIE	7
+#define BCM6318_RST_PCIE_EXT	8
+#define BCM6318_RST_PCIE_HARD	9
+#define BCM6318_RST_ADSL	10
+#define BCM6318_RST_PHYMIPS	11
+#define BCM6318_RST_HOSTMIPS	11
+
+#endif /* __DT_BINDINGS_RESET_BCM6318_H */
-- 
2.26.2

Re: [PATCH v3 2/9] dt-bindings: reset: add BCM6345 reset controller bindings

[Rob Herring]

On Wed, 10 Jun 2020 19:28:52 +0200, Álvaro Fernández Rojas wrote:
> Add device tree binding documentation for BCM6345 reset controller.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
> ---
>  .../bindings/reset/brcm,bcm6345-reset.yaml    | 37 +++++++++++++++++++
>  1 file changed, 37 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
> 


My bot found errors running 'make dt_binding_check' on your patch:

/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.example.dt.yaml: reset-controller@10000010: reg: [[268435472, 4]] is too short


See https://patchwork.ozlabs.org/patch/1307115

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure dt-schema is up to date:

pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade

Please check and re-submit.

Re: [PATCH v3 2/9] dt-bindings: reset: add BCM6345 reset controller bindings

[Florian Fainelli]

On 6/12/2020 2:57 PM, Rob Herring wrote:
> On Wed, 10 Jun 2020 19:28:52 +0200, Álvaro Fernández Rojas wrote:
>> Add device tree binding documentation for BCM6345 reset controller.
>>
>> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
>> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
>> ---
>>  .../bindings/reset/brcm,bcm6345-reset.yaml    | 37 +++++++++++++++++++
>>  1 file changed, 37 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
>>
> 
> 
> My bot found errors running 'make dt_binding_check' on your patch:
> 
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.example.dt.yaml: reset-controller@10000010: reg: [[268435472, 4]] is too short

maxItems for the reg property should be 1 here.
-- 
Florian

[PATCH v4 0/9] bmips: add bcm6345 reset controller support

[Álvaro Fernández Rojas]

BCM63xx SoCs have a reset controller for certain components.

v4: Fix device tree bindings documentation.
v3: using reset-simple isn't possible since sleeping after performing the
    reset is also needed.
    Add BCM63268 and BCM6318 support.
v2: add compatibility to reset-simple instead of adding a new driver.

Álvaro Fernández Rojas (9):
  mips: bmips: select ARCH_HAS_RESET_CONTROLLER
  dt-bindings: reset: add BCM6345 reset controller bindings
  reset: add BCM6345 reset controller driver
  mips: bmips: dts: add BCM6328 reset controller support
  mips: bmips: dts: add BCM6358 reset controller support
  mips: bmips: dts: add BCM6362 reset controller support
  mips: bmips: dts: add BCM6368 reset controller support
  mips: bmips: dts: add BCM63268 reset controller support
  mips: bmips: add BCM6318 reset controller definitions

 .../bindings/reset/brcm,bcm6345-reset.yaml    |  37 +++++
 arch/mips/Kconfig                             |   1 +
 arch/mips/boot/dts/brcm/bcm63268.dtsi         |   6 +
 arch/mips/boot/dts/brcm/bcm6328.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6358.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6362.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6368.dtsi          |   6 +
 drivers/reset/Kconfig                         |   7 +
 drivers/reset/Makefile                        |   1 +
 drivers/reset/reset-bcm6345.c                 | 135 ++++++++++++++++++
 include/dt-bindings/reset/bcm6318-reset.h     |  20 +++
 include/dt-bindings/reset/bcm63268-reset.h    |  26 ++++
 include/dt-bindings/reset/bcm6328-reset.h     |  18 +++
 include/dt-bindings/reset/bcm6358-reset.h     |  15 ++
 include/dt-bindings/reset/bcm6362-reset.h     |  22 +++
 include/dt-bindings/reset/bcm6368-reset.h     |  16 +++
 16 files changed, 328 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
 create mode 100644 drivers/reset/reset-bcm6345.c
 create mode 100644 include/dt-bindings/reset/bcm6318-reset.h
 create mode 100644 include/dt-bindings/reset/bcm63268-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6328-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6358-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6362-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6368-reset.h

-- 
2.27.0

[PATCH v4 1/9] mips: bmips: select ARCH_HAS_RESET_CONTROLLER

[Álvaro Fernández Rojas]

This allows to add reset controllers support.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v4: no changes
 v3: no changes
 v2: no changes

 arch/mips/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 26c63e8161f0..4721ec4e3408 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -227,6 +227,7 @@ config ATH79
 
 config BMIPS_GENERIC
 	bool "Broadcom Generic BMIPS kernel"
+	select ARCH_HAS_RESET_CONTROLLER
 	select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
 	select ARCH_HAS_PHYS_TO_DMA
 	select BOOT_RAW
-- 
2.27.0

[PATCH v4 2/9] dt-bindings: reset: add BCM6345 reset controller bindings

[Álvaro Fernández Rojas]

Add device tree binding documentation for BCM6345 reset controller.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v4: change license and fix maxItems.
 v3: no changes
 v2: no changes

 .../bindings/reset/brcm,bcm6345-reset.yaml    | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml

diff --git a/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml b/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
new file mode 100644
index 000000000000..560cf6522cb8
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/reset/brcm,bcm6345-reset.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: BCM6345 reset controller
+
+description: This document describes the BCM6345 reset controller.
+
+maintainers:
+  - Álvaro Fernández Rojas <noltari@gmail.com>
+
+properties:
+  compatible:
+    const: brcm,bcm6345-reset
+
+  reg:
+    maxItems: 1
+
+  "#reset-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    reset-controller@10000010 {
+      compatible = "brcm,bcm6345-reset";
+      reg = <0x10000010 0x4>;
+      #reset-cells = <1>;
+    };
-- 
2.27.0

[PATCH v4 3/9] reset: add BCM6345 reset controller driver

[Álvaro Fernández Rojas]

Add support for resetting blocks through the Linux reset controller
subsystem for BCM63xx SoCs.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v4: no changes.
 v3: using reset-simple isn't possible since sleeping after performing the
     reset is also needed.
 v2: add compatibility to reset-simple instead of adding a new driver.

 drivers/reset/Kconfig         |   7 ++
 drivers/reset/Makefile        |   1 +
 drivers/reset/reset-bcm6345.c | 135 ++++++++++++++++++++++++++++++++++
 3 files changed, 143 insertions(+)
 create mode 100644 drivers/reset/reset-bcm6345.c

diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index d9efbfd29646..9f1da978cef6 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -41,6 +41,13 @@ config RESET_BERLIN
 	help
 	  This enables the reset controller driver for Marvell Berlin SoCs.
 
+config RESET_BCM6345
+	bool "BCM6345 Reset Controller"
+	depends on BMIPS_GENERIC || COMPILE_TEST
+	default BMIPS_GENERIC
+	help
+	  This enables the reset controller driver for BCM6345 SoCs.
+
 config RESET_BRCMSTB
 	tristate "Broadcom STB reset controller"
 	depends on ARCH_BRCMSTB || COMPILE_TEST
diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index 249ed357c997..e642aae42f0f 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/
 obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
 obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
 obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
+obj-$(CONFIG_RESET_BCM6345) += reset-bcm6345.o
 obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
 obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
 obj-$(CONFIG_RESET_BRCMSTB_RESCAL) += reset-brcmstb-rescal.o
diff --git a/drivers/reset/reset-bcm6345.c b/drivers/reset/reset-bcm6345.c
new file mode 100644
index 000000000000..6c9238762ee5
--- /dev/null
+++ b/drivers/reset/reset-bcm6345.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * BCM6345 Reset Controller Driver
+ *
+ * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+
+#define BCM6345_RESET_NUM		32
+#define BCM6345_RESET_SLEEP_MIN_US	10000
+#define BCM6345_RESET_SLEEP_MAX_US	20000
+
+struct bcm6345_reset {
+	struct reset_controller_dev rcdev;
+	void __iomem *base;
+	spinlock_t lock;
+};
+
+static void bcm6345_reset_update(struct reset_controller_dev *rcdev,
+				 unsigned long id, bool assert)
+{
+	struct bcm6345_reset *bcm6345_reset =
+		container_of(rcdev, struct bcm6345_reset, rcdev);
+	unsigned long flags;
+	uint32_t val;
+
+	spin_lock_irqsave(&bcm6345_reset->lock, flags);
+	val = __raw_readl(bcm6345_reset->base);
+	if (assert)
+		val &= ~BIT(id);
+	else
+		val |= BIT(id);
+	__raw_writel(val, bcm6345_reset->base);
+	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
+}
+
+static int bcm6345_reset_assert(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	bcm6345_reset_update(rcdev, id, true);
+
+	return 0;
+}
+
+static int bcm6345_reset_deassert(struct reset_controller_dev *rcdev,
+				  unsigned long id)
+{
+	bcm6345_reset_update(rcdev, id, false);
+
+	return 0;
+}
+
+static int bcm6345_reset_reset(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	bcm6345_reset_update(rcdev, id, true);
+	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
+		     BCM6345_RESET_SLEEP_MAX_US);
+
+	bcm6345_reset_update(rcdev, id, false);
+	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
+		     BCM6345_RESET_SLEEP_MAX_US);
+
+	return 0;
+}
+
+static int bcm6345_reset_status(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	struct bcm6345_reset *bcm6345_reset =
+		container_of(rcdev, struct bcm6345_reset, rcdev);
+
+	return !(__raw_readl(bcm6345_reset->base) & BIT(id));
+}
+
+static struct reset_control_ops bcm6345_reset_ops = {
+	.assert = bcm6345_reset_assert,
+	.deassert = bcm6345_reset_deassert,
+	.reset = bcm6345_reset_reset,
+	.status = bcm6345_reset_status,
+};
+
+static int __init bcm6345_reset_probe(struct platform_device *pdev)
+{
+	struct bcm6345_reset *bcm6345_reset;
+	struct resource *res;
+	int err;
+
+	bcm6345_reset = devm_kzalloc(&pdev->dev,
+				     sizeof(*bcm6345_reset), GFP_KERNEL);
+	if (!bcm6345_reset)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, bcm6345_reset);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	bcm6345_reset->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(bcm6345_reset->base))
+		return PTR_ERR(bcm6345_reset->base);
+
+	spin_lock_init(&bcm6345_reset->lock);
+	bcm6345_reset->rcdev.ops = &bcm6345_reset_ops;
+	bcm6345_reset->rcdev.owner = THIS_MODULE;
+	bcm6345_reset->rcdev.of_node = pdev->dev.of_node;
+	bcm6345_reset->rcdev.of_reset_n_cells = 1;
+	bcm6345_reset->rcdev.nr_resets = BCM6345_RESET_NUM;
+
+	err = devm_reset_controller_register(&pdev->dev,
+					     &bcm6345_reset->rcdev);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static const struct of_device_id bcm6345_reset_of_match[] = {
+	{ .compatible = "brcm,bcm6345-reset" },
+	{ },
+};
+
+static struct platform_driver bcm6345_reset_driver = {
+	.probe = bcm6345_reset_probe,
+	.driver	= {
+		.name = "bcm6345-reset",
+		.of_match_table = bcm6345_reset_of_match,
+		.suppress_bind_attrs = true,
+	},
+};
+builtin_platform_driver(bcm6345_reset_driver);
-- 
2.27.0

[PATCH v4 4/9] mips: bmips: dts: add BCM6328 reset controller support

[Álvaro Fernández Rojas]

BCM6328 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v4: no changes.
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6328.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6328-reset.h | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6328-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6328.dtsi b/arch/mips/boot/dts/brcm/bcm6328.dtsi
index af860d06def6..590118cf5c12 100644
--- a/arch/mips/boot/dts/brcm/bcm6328.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6328.dtsi
@@ -57,6 +57,12 @@ clkctl: clock-controller@10000004 {
 			#clock-cells = <1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
diff --git a/include/dt-bindings/reset/bcm6328-reset.h b/include/dt-bindings/reset/bcm6328-reset.h
new file mode 100644
index 000000000000..0f3df87d47af
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6328-reset.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6328_H
+#define __DT_BINDINGS_RESET_BCM6328_H
+
+#define BCM6328_RST_SPI		0
+#define BCM6328_RST_EPHY	1
+#define BCM6328_RST_SAR		2
+#define BCM6328_RST_ENETSW	3
+#define BCM6328_RST_USBS	4
+#define BCM6328_RST_USBH	5
+#define BCM6328_RST_PCM		6
+#define BCM6328_RST_PCIE_CORE	7
+#define BCM6328_RST_PCIE	8
+#define BCM6328_RST_PCIE_EXT	9
+#define BCM6328_RST_PCIE_HARD	10
+
+#endif /* __DT_BINDINGS_RESET_BCM6328_H */
-- 
2.27.0

[PATCH v4 5/9] mips: bmips: dts: add BCM6358 reset controller support

[Álvaro Fernández Rojas]

BCM6358 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v4: no changes.
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6358.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6358-reset.h | 15 +++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6358-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6358.dtsi b/arch/mips/boot/dts/brcm/bcm6358.dtsi
index f21176cac038..9d93e7f5e6fc 100644
--- a/arch/mips/boot/dts/brcm/bcm6358.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6358.dtsi
@@ -82,6 +82,12 @@ periph_intc: interrupt-controller@fffe000c {
 			interrupts = <2>, <3>;
 		};
 
+		periph_rst: reset-controller@fffe0034 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0xfffe0034 0x4>;
+			#reset-cells = <1>;
+		};
+
 		leds0: led-controller@fffe00d0 {
 			#address-cells = <1>;
 			#size-cells = <0>;
diff --git a/include/dt-bindings/reset/bcm6358-reset.h b/include/dt-bindings/reset/bcm6358-reset.h
new file mode 100644
index 000000000000..bda62ef84f5a
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6358-reset.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6358_H
+#define __DT_BINDINGS_RESET_BCM6358_H
+
+#define BCM6358_RST_SPI		0
+#define BCM6358_RST_ENET	2
+#define BCM6358_RST_MPI		3
+#define BCM6358_RST_EPHY	6
+#define BCM6358_RST_SAR		7
+#define BCM6358_RST_USBH	12
+#define BCM6358_RST_PCM		13
+#define BCM6358_RST_ADSL	14
+
+#endif /* __DT_BINDINGS_RESET_BCM6358_H */
-- 
2.27.0

[PATCH v4 6/9] mips: bmips: dts: add BCM6362 reset controller support

[Álvaro Fernández Rojas]

BCM6362 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v4: no changes.
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6362.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6362-reset.h | 22 ++++++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6362-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6362.dtsi b/arch/mips/boot/dts/brcm/bcm6362.dtsi
index 8ae6981735b8..443af6b4c838 100644
--- a/arch/mips/boot/dts/brcm/bcm6362.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6362.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
diff --git a/include/dt-bindings/reset/bcm6362-reset.h b/include/dt-bindings/reset/bcm6362-reset.h
new file mode 100644
index 000000000000..7ebb0546e0ab
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6362-reset.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6362_H
+#define __DT_BINDINGS_RESET_BCM6362_H
+
+#define BCM6362_RST_SPI		0
+#define BCM6362_RST_IPSEC	1
+#define BCM6362_RST_EPHY	2
+#define BCM6362_RST_SAR		3
+#define BCM6362_RST_ENETSW	4
+#define BCM6362_RST_USBD	5
+#define BCM6362_RST_USBH	6
+#define BCM6362_RST_PCM		7
+#define BCM6362_RST_PCIE_CORE	8
+#define BCM6362_RST_PCIE	9
+#define BCM6362_RST_PCIE_EXT	10
+#define BCM6362_RST_WLAN_SHIM	11
+#define BCM6362_RST_DDR_PHY	12
+#define BCM6362_RST_FAP		13
+#define BCM6362_RST_WLAN_UBUS	14
+
+#endif /* __DT_BINDINGS_RESET_BCM6362_H */
-- 
2.27.0

[PATCH v4 7/9] mips: bmips: dts: add BCM6368 reset controller support

[Álvaro Fernández Rojas]

BCM6368 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v4: no changes.
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6368.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6368-reset.h | 16 ++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6368-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6368.dtsi b/arch/mips/boot/dts/brcm/bcm6368.dtsi
index 449c167dd892..52c19f40b9cc 100644
--- a/arch/mips/boot/dts/brcm/bcm6368.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6368.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
diff --git a/include/dt-bindings/reset/bcm6368-reset.h b/include/dt-bindings/reset/bcm6368-reset.h
new file mode 100644
index 000000000000..c81d8eb6d173
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6368-reset.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6368_H
+#define __DT_BINDINGS_RESET_BCM6368_H
+
+#define BCM6368_RST_SPI		0
+#define BCM6368_RST_MPI		3
+#define BCM6368_RST_IPSEC	4
+#define BCM6368_RST_EPHY	6
+#define BCM6368_RST_SAR		7
+#define BCM6368_RST_SWITCH	10
+#define BCM6368_RST_USBD	11
+#define BCM6368_RST_USBH	12
+#define BCM6368_RST_PCM		13
+
+#endif /* __DT_BINDINGS_RESET_BCM6368_H */
-- 
2.27.0

[PATCH v4 8/9] mips: bmips: dts: add BCM63268 reset controller support

[Álvaro Fernández Rojas]

BCM63268 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v4: no changes.
 v3: add new path with BCM63268 reset controller support.

 arch/mips/boot/dts/brcm/bcm63268.dtsi      |  6 +++++
 include/dt-bindings/reset/bcm63268-reset.h | 26 ++++++++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm63268-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm63268.dtsi b/arch/mips/boot/dts/brcm/bcm63268.dtsi
index beec24145af7..0150da7e3905 100644
--- a/arch/mips/boot/dts/brcm/bcm63268.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm63268.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x20>,
diff --git a/include/dt-bindings/reset/bcm63268-reset.h b/include/dt-bindings/reset/bcm63268-reset.h
new file mode 100644
index 000000000000..6a6403a4c2d5
--- /dev/null
+++ b/include/dt-bindings/reset/bcm63268-reset.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM63268_H
+#define __DT_BINDINGS_RESET_BCM63268_H
+
+#define BCM63268_RST_SPI	0
+#define BCM63268_RST_IPSEC	1
+#define BCM63268_RST_EPHY	2
+#define BCM63268_RST_SAR	3
+#define BCM63268_RST_ENETSW	4
+#define BCM63268_RST_USBS	5
+#define BCM63268_RST_USBH	6
+#define BCM63268_RST_PCM	7
+#define BCM63268_RST_PCIE_CORE	8
+#define BCM63268_RST_PCIE	9
+#define BCM63268_RST_PCIE_EXT	10
+#define BCM63268_RST_WLAN_SHIM	11
+#define BCM63268_RST_DDR_PHY	12
+#define BCM63268_RST_FAP0	13
+#define BCM63268_RST_WLAN_UBUS	14
+#define BCM63268_RST_DECT	15
+#define BCM63268_RST_FAP1	16
+#define BCM63268_RST_PCIE_HARD	17
+#define BCM63268_RST_GPHY	18
+
+#endif /* __DT_BINDINGS_RESET_BCM63268_H */
-- 
2.27.0

[PATCH v4 9/9] mips: bmips: add BCM6318 reset controller definitions

[Álvaro Fernández Rojas]

BCM6318 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
---
 v4: no changes.
 v3: add new path with BCM6318 reset controller definitions.

 include/dt-bindings/reset/bcm6318-reset.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6318-reset.h

diff --git a/include/dt-bindings/reset/bcm6318-reset.h b/include/dt-bindings/reset/bcm6318-reset.h
new file mode 100644
index 000000000000..f4fef7bfb06d
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6318-reset.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6318_H
+#define __DT_BINDINGS_RESET_BCM6318_H
+
+#define BCM6318_RST_SPI		0
+#define BCM6318_RST_EPHY	1
+#define BCM6318_RST_SAR		2
+#define BCM6318_RST_ENETSW	3
+#define BCM6318_RST_USBD	4
+#define BCM6318_RST_USBH	5
+#define BCM6318_RST_PCIE_CORE	6
+#define BCM6318_RST_PCIE	7
+#define BCM6318_RST_PCIE_EXT	8
+#define BCM6318_RST_PCIE_HARD	9
+#define BCM6318_RST_ADSL	10
+#define BCM6318_RST_PHYMIPS	11
+#define BCM6318_RST_HOSTMIPS	11
+
+#endif /* __DT_BINDINGS_RESET_BCM6318_H */
-- 
2.27.0

Re: [PATCH v4 3/9] reset: add BCM6345 reset controller driver

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 1831 bytes --]

Hi "Álvaro,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on pza/reset/next]
[also build test WARNING on robh/for-next v5.7]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/lvaro-Fern-ndez-Rojas/bmips-add-bcm6345-reset-controller-support/20200613-164237
base:   https://git.pengutronix.de/git/pza/linux reset/next
config: x86_64-allyesconfig (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project d7e6f116f4517952fbdf5ad4b5ff67e378600c60)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> WARNING: modpost: vmlinux.o(.data+0x1b0c020): Section mismatch in reference from the variable bcm6345_reset_driver to the function .init.text:bcm6345_reset_probe()
The variable bcm6345_reset_driver references
the function __init bcm6345_reset_probe()
If the reference is valid then annotate the
variable with or __refdata (see linux/init.h) or name the variable:

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 73526 bytes --]

Re: [PATCH v4 3/9] reset: add BCM6345 reset controller driver

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 1870 bytes --]

Hi "Álvaro,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on pza/reset/next]
[also build test WARNING on robh/for-next v5.7]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/lvaro-Fern-ndez-Rojas/bmips-add-bcm6345-reset-controller-support/20200613-164237
base:   https://git.pengutronix.de/git/pza/linux reset/next
config: x86_64-allyesconfig (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project d7e6f116f4517952fbdf5ad4b5ff67e378600c60)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> WARNING: modpost: vmlinux.o(.data+0x1b0c020): Section mismatch in reference from the variable bcm6345_reset_driver to the function .init.text:bcm6345_reset_probe()
The variable bcm6345_reset_driver references
the function __init bcm6345_reset_probe()
If the reference is valid then annotate the
variable with or __refdata (see linux/init.h) or name the variable:

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 73526 bytes --]

Re: [PATCH v4 8/9] mips: bmips: dts: add BCM63268 reset controller support

[Florian Fainelli]

On 6/13/2020 1:38 AM, Álvaro Fernández Rojas wrote:
> BCM63268 SoCs have a reset controller for certain components.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

Acked-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

Re: [PATCH v4 9/9] mips: bmips: add BCM6318 reset controller definitions

[Florian Fainelli]

On 6/13/2020 1:38 AM, Álvaro Fernández Rojas wrote:
> BCM6318 SoCs have a reset controller for certain components.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

Acked-by: Florian Fainelli <F.fainelli@gmail.com>
-- 
Florian

Re: [PATCH v4 3/9] reset: add BCM6345 reset controller driver

[Florian Fainelli]

On 6/13/2020 1:38 AM, Álvaro Fernández Rojas wrote:
> Add support for resetting blocks through the Linux reset controller
> subsystem for BCM63xx SoCs.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

With the kbuild robot error fixed:

Reviewed-by: Florian Fainelli <F.fainelli@gmail.com>

Thanks!
-- 
Florian

[PATCH v5 0/9] bmips: add bcm6345 reset controller support

[Álvaro Fernández Rojas]

BCM63xx SoCs have a reset controller for certain components.

v5: fix kbuild robot error (drop __init).
v4: fix device tree bindings documentation.
v3: using reset-simple isn't possible since sleeping after performing the
    reset is also needed.
    Add BCM63268 and BCM6318 support.
v2: add compatibility to reset-simple instead of adding a new driver.

Álvaro Fernández Rojas (9):
  mips: bmips: select ARCH_HAS_RESET_CONTROLLER
  dt-bindings: reset: add BCM6345 reset controller bindings
  reset: add BCM6345 reset controller driver
  mips: bmips: dts: add BCM6328 reset controller support
  mips: bmips: dts: add BCM6358 reset controller support
  mips: bmips: dts: add BCM6362 reset controller support
  mips: bmips: dts: add BCM6368 reset controller support
  mips: bmips: dts: add BCM63268 reset controller support
  mips: bmips: add BCM6318 reset controller definitions

 .../bindings/reset/brcm,bcm6345-reset.yaml    |  37 +++++
 arch/mips/Kconfig                             |   1 +
 arch/mips/boot/dts/brcm/bcm63268.dtsi         |   6 +
 arch/mips/boot/dts/brcm/bcm6328.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6358.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6362.dtsi          |   6 +
 arch/mips/boot/dts/brcm/bcm6368.dtsi          |   6 +
 drivers/reset/Kconfig                         |   7 +
 drivers/reset/Makefile                        |   1 +
 drivers/reset/reset-bcm6345.c                 | 135 ++++++++++++++++++
 include/dt-bindings/reset/bcm6318-reset.h     |  20 +++
 include/dt-bindings/reset/bcm63268-reset.h    |  26 ++++
 include/dt-bindings/reset/bcm6328-reset.h     |  18 +++
 include/dt-bindings/reset/bcm6358-reset.h     |  15 ++
 include/dt-bindings/reset/bcm6362-reset.h     |  22 +++
 include/dt-bindings/reset/bcm6368-reset.h     |  16 +++
 16 files changed, 328 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
 create mode 100644 drivers/reset/reset-bcm6345.c
 create mode 100644 include/dt-bindings/reset/bcm6318-reset.h
 create mode 100644 include/dt-bindings/reset/bcm63268-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6328-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6358-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6362-reset.h
 create mode 100644 include/dt-bindings/reset/bcm6368-reset.h

-- 
2.27.0

[PATCH v5 1/9] mips: bmips: select ARCH_HAS_RESET_CONTROLLER

[Álvaro Fernández Rojas]

This allows to add reset controllers support.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v5: no changes
 v4: no changes
 v3: no changes
 v2: no changes

 arch/mips/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 6fee1a133e9d..b1840119cb64 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -227,6 +227,7 @@ config ATH79
 
 config BMIPS_GENERIC
 	bool "Broadcom Generic BMIPS kernel"
+	select ARCH_HAS_RESET_CONTROLLER
 	select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
 	select ARCH_HAS_PHYS_TO_DMA
 	select BOOT_RAW
-- 
2.27.0

[PATCH v5 2/9] dt-bindings: reset: add BCM6345 reset controller bindings

[Álvaro Fernández Rojas]

Add device tree binding documentation for BCM6345 reset controller.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v5: no changes
 v4: change license and fix maxItems.
 v3: no changes
 v2: no changes

 .../bindings/reset/brcm,bcm6345-reset.yaml    | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml

diff --git a/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml b/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
new file mode 100644
index 000000000000..560cf6522cb8
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/brcm,bcm6345-reset.yaml
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/reset/brcm,bcm6345-reset.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: BCM6345 reset controller
+
+description: This document describes the BCM6345 reset controller.
+
+maintainers:
+  - Álvaro Fernández Rojas <noltari@gmail.com>
+
+properties:
+  compatible:
+    const: brcm,bcm6345-reset
+
+  reg:
+    maxItems: 1
+
+  "#reset-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    reset-controller@10000010 {
+      compatible = "brcm,bcm6345-reset";
+      reg = <0x10000010 0x4>;
+      #reset-cells = <1>;
+    };
-- 
2.27.0

[PATCH v5 3/9] reset: add BCM6345 reset controller driver

[Álvaro Fernández Rojas]

Add support for resetting blocks through the Linux reset controller
subsystem for BCM63xx SoCs.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <F.fainelli@gmail.com>
---
 v5: fix kbuild robot error (drop __init).
 v4: no changes.
 v3: using reset-simple isn't possible since sleeping after performing the
     reset is also needed.
 v2: add compatibility to reset-simple instead of adding a new driver.

 drivers/reset/Kconfig         |   7 ++
 drivers/reset/Makefile        |   1 +
 drivers/reset/reset-bcm6345.c | 135 ++++++++++++++++++++++++++++++++++
 3 files changed, 143 insertions(+)
 create mode 100644 drivers/reset/reset-bcm6345.c

diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index d9efbfd29646..9f1da978cef6 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -41,6 +41,13 @@ config RESET_BERLIN
 	help
 	  This enables the reset controller driver for Marvell Berlin SoCs.
 
+config RESET_BCM6345
+	bool "BCM6345 Reset Controller"
+	depends on BMIPS_GENERIC || COMPILE_TEST
+	default BMIPS_GENERIC
+	help
+	  This enables the reset controller driver for BCM6345 SoCs.
+
 config RESET_BRCMSTB
 	tristate "Broadcom STB reset controller"
 	depends on ARCH_BRCMSTB || COMPILE_TEST
diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index 249ed357c997..e642aae42f0f 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_ARCH_TEGRA) += tegra/
 obj-$(CONFIG_RESET_A10SR) += reset-a10sr.o
 obj-$(CONFIG_RESET_ATH79) += reset-ath79.o
 obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
+obj-$(CONFIG_RESET_BCM6345) += reset-bcm6345.o
 obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
 obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
 obj-$(CONFIG_RESET_BRCMSTB_RESCAL) += reset-brcmstb-rescal.o
diff --git a/drivers/reset/reset-bcm6345.c b/drivers/reset/reset-bcm6345.c
new file mode 100644
index 000000000000..e1acb8d9f661
--- /dev/null
+++ b/drivers/reset/reset-bcm6345.c
@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * BCM6345 Reset Controller Driver
+ *
+ * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+
+#define BCM6345_RESET_NUM		32
+#define BCM6345_RESET_SLEEP_MIN_US	10000
+#define BCM6345_RESET_SLEEP_MAX_US	20000
+
+struct bcm6345_reset {
+	struct reset_controller_dev rcdev;
+	void __iomem *base;
+	spinlock_t lock;
+};
+
+static void bcm6345_reset_update(struct reset_controller_dev *rcdev,
+				 unsigned long id, bool assert)
+{
+	struct bcm6345_reset *bcm6345_reset =
+		container_of(rcdev, struct bcm6345_reset, rcdev);
+	unsigned long flags;
+	uint32_t val;
+
+	spin_lock_irqsave(&bcm6345_reset->lock, flags);
+	val = __raw_readl(bcm6345_reset->base);
+	if (assert)
+		val &= ~BIT(id);
+	else
+		val |= BIT(id);
+	__raw_writel(val, bcm6345_reset->base);
+	spin_unlock_irqrestore(&bcm6345_reset->lock, flags);
+}
+
+static int bcm6345_reset_assert(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	bcm6345_reset_update(rcdev, id, true);
+
+	return 0;
+}
+
+static int bcm6345_reset_deassert(struct reset_controller_dev *rcdev,
+				  unsigned long id)
+{
+	bcm6345_reset_update(rcdev, id, false);
+
+	return 0;
+}
+
+static int bcm6345_reset_reset(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	bcm6345_reset_update(rcdev, id, true);
+	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
+		     BCM6345_RESET_SLEEP_MAX_US);
+
+	bcm6345_reset_update(rcdev, id, false);
+	usleep_range(BCM6345_RESET_SLEEP_MIN_US,
+		     BCM6345_RESET_SLEEP_MAX_US);
+
+	return 0;
+}
+
+static int bcm6345_reset_status(struct reset_controller_dev *rcdev,
+				unsigned long id)
+{
+	struct bcm6345_reset *bcm6345_reset =
+		container_of(rcdev, struct bcm6345_reset, rcdev);
+
+	return !(__raw_readl(bcm6345_reset->base) & BIT(id));
+}
+
+static struct reset_control_ops bcm6345_reset_ops = {
+	.assert = bcm6345_reset_assert,
+	.deassert = bcm6345_reset_deassert,
+	.reset = bcm6345_reset_reset,
+	.status = bcm6345_reset_status,
+};
+
+static int bcm6345_reset_probe(struct platform_device *pdev)
+{
+	struct bcm6345_reset *bcm6345_reset;
+	struct resource *res;
+	int err;
+
+	bcm6345_reset = devm_kzalloc(&pdev->dev,
+				     sizeof(*bcm6345_reset), GFP_KERNEL);
+	if (!bcm6345_reset)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, bcm6345_reset);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	bcm6345_reset->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(bcm6345_reset->base))
+		return PTR_ERR(bcm6345_reset->base);
+
+	spin_lock_init(&bcm6345_reset->lock);
+	bcm6345_reset->rcdev.ops = &bcm6345_reset_ops;
+	bcm6345_reset->rcdev.owner = THIS_MODULE;
+	bcm6345_reset->rcdev.of_node = pdev->dev.of_node;
+	bcm6345_reset->rcdev.of_reset_n_cells = 1;
+	bcm6345_reset->rcdev.nr_resets = BCM6345_RESET_NUM;
+
+	err = devm_reset_controller_register(&pdev->dev,
+					     &bcm6345_reset->rcdev);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static const struct of_device_id bcm6345_reset_of_match[] = {
+	{ .compatible = "brcm,bcm6345-reset" },
+	{ },
+};
+
+static struct platform_driver bcm6345_reset_driver = {
+	.probe = bcm6345_reset_probe,
+	.driver	= {
+		.name = "bcm6345-reset",
+		.of_match_table = bcm6345_reset_of_match,
+		.suppress_bind_attrs = true,
+	},
+};
+builtin_platform_driver(bcm6345_reset_driver);
-- 
2.27.0

[PATCH v5 4/9] mips: bmips: dts: add BCM6328 reset controller support

[Álvaro Fernández Rojas]

BCM6328 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v5: no changes.
 v4: no changes.
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6328.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6328-reset.h | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6328-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6328.dtsi b/arch/mips/boot/dts/brcm/bcm6328.dtsi
index af860d06def6..590118cf5c12 100644
--- a/arch/mips/boot/dts/brcm/bcm6328.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6328.dtsi
@@ -57,6 +57,12 @@ clkctl: clock-controller@10000004 {
 			#clock-cells = <1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
diff --git a/include/dt-bindings/reset/bcm6328-reset.h b/include/dt-bindings/reset/bcm6328-reset.h
new file mode 100644
index 000000000000..0f3df87d47af
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6328-reset.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6328_H
+#define __DT_BINDINGS_RESET_BCM6328_H
+
+#define BCM6328_RST_SPI		0
+#define BCM6328_RST_EPHY	1
+#define BCM6328_RST_SAR		2
+#define BCM6328_RST_ENETSW	3
+#define BCM6328_RST_USBS	4
+#define BCM6328_RST_USBH	5
+#define BCM6328_RST_PCM		6
+#define BCM6328_RST_PCIE_CORE	7
+#define BCM6328_RST_PCIE	8
+#define BCM6328_RST_PCIE_EXT	9
+#define BCM6328_RST_PCIE_HARD	10
+
+#endif /* __DT_BINDINGS_RESET_BCM6328_H */
-- 
2.27.0

[PATCH v5 5/9] mips: bmips: dts: add BCM6358 reset controller support

[Álvaro Fernández Rojas]

BCM6358 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v5: no changes.
 v4: no changes.
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6358.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6358-reset.h | 15 +++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6358-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6358.dtsi b/arch/mips/boot/dts/brcm/bcm6358.dtsi
index f21176cac038..9d93e7f5e6fc 100644
--- a/arch/mips/boot/dts/brcm/bcm6358.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6358.dtsi
@@ -82,6 +82,12 @@ periph_intc: interrupt-controller@fffe000c {
 			interrupts = <2>, <3>;
 		};
 
+		periph_rst: reset-controller@fffe0034 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0xfffe0034 0x4>;
+			#reset-cells = <1>;
+		};
+
 		leds0: led-controller@fffe00d0 {
 			#address-cells = <1>;
 			#size-cells = <0>;
diff --git a/include/dt-bindings/reset/bcm6358-reset.h b/include/dt-bindings/reset/bcm6358-reset.h
new file mode 100644
index 000000000000..bda62ef84f5a
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6358-reset.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6358_H
+#define __DT_BINDINGS_RESET_BCM6358_H
+
+#define BCM6358_RST_SPI		0
+#define BCM6358_RST_ENET	2
+#define BCM6358_RST_MPI		3
+#define BCM6358_RST_EPHY	6
+#define BCM6358_RST_SAR		7
+#define BCM6358_RST_USBH	12
+#define BCM6358_RST_PCM		13
+#define BCM6358_RST_ADSL	14
+
+#endif /* __DT_BINDINGS_RESET_BCM6358_H */
-- 
2.27.0

[PATCH v5 6/9] mips: bmips: dts: add BCM6362 reset controller support

[Álvaro Fernández Rojas]

BCM6362 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v5: no changes.
 v4: no changes.
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6362.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6362-reset.h | 22 ++++++++++++++++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6362-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6362.dtsi b/arch/mips/boot/dts/brcm/bcm6362.dtsi
index 8ae6981735b8..443af6b4c838 100644
--- a/arch/mips/boot/dts/brcm/bcm6362.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6362.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
diff --git a/include/dt-bindings/reset/bcm6362-reset.h b/include/dt-bindings/reset/bcm6362-reset.h
new file mode 100644
index 000000000000..7ebb0546e0ab
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6362-reset.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6362_H
+#define __DT_BINDINGS_RESET_BCM6362_H
+
+#define BCM6362_RST_SPI		0
+#define BCM6362_RST_IPSEC	1
+#define BCM6362_RST_EPHY	2
+#define BCM6362_RST_SAR		3
+#define BCM6362_RST_ENETSW	4
+#define BCM6362_RST_USBD	5
+#define BCM6362_RST_USBH	6
+#define BCM6362_RST_PCM		7
+#define BCM6362_RST_PCIE_CORE	8
+#define BCM6362_RST_PCIE	9
+#define BCM6362_RST_PCIE_EXT	10
+#define BCM6362_RST_WLAN_SHIM	11
+#define BCM6362_RST_DDR_PHY	12
+#define BCM6362_RST_FAP		13
+#define BCM6362_RST_WLAN_UBUS	14
+
+#endif /* __DT_BINDINGS_RESET_BCM6362_H */
-- 
2.27.0

[PATCH v5 7/9] mips: bmips: dts: add BCM6368 reset controller support

[Álvaro Fernández Rojas]

BCM6368 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v5: no changes.
 v4: no changes.
 v3: add reset controller definitions header file.
 v2: no changes.

 arch/mips/boot/dts/brcm/bcm6368.dtsi      |  6 ++++++
 include/dt-bindings/reset/bcm6368-reset.h | 16 ++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6368-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm6368.dtsi b/arch/mips/boot/dts/brcm/bcm6368.dtsi
index 449c167dd892..52c19f40b9cc 100644
--- a/arch/mips/boot/dts/brcm/bcm6368.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm6368.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x10>,
diff --git a/include/dt-bindings/reset/bcm6368-reset.h b/include/dt-bindings/reset/bcm6368-reset.h
new file mode 100644
index 000000000000..c81d8eb6d173
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6368-reset.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6368_H
+#define __DT_BINDINGS_RESET_BCM6368_H
+
+#define BCM6368_RST_SPI		0
+#define BCM6368_RST_MPI		3
+#define BCM6368_RST_IPSEC	4
+#define BCM6368_RST_EPHY	6
+#define BCM6368_RST_SAR		7
+#define BCM6368_RST_SWITCH	10
+#define BCM6368_RST_USBD	11
+#define BCM6368_RST_USBH	12
+#define BCM6368_RST_PCM		13
+
+#endif /* __DT_BINDINGS_RESET_BCM6368_H */
-- 
2.27.0

[PATCH v5 8/9] mips: bmips: dts: add BCM63268 reset controller support

[Álvaro Fernández Rojas]

BCM63268 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
---
 v5: no changes.
 v4: no changes.
 v3: add new path with BCM63268 reset controller support.

 arch/mips/boot/dts/brcm/bcm63268.dtsi      |  6 +++++
 include/dt-bindings/reset/bcm63268-reset.h | 26 ++++++++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm63268-reset.h

diff --git a/arch/mips/boot/dts/brcm/bcm63268.dtsi b/arch/mips/boot/dts/brcm/bcm63268.dtsi
index beec24145af7..0150da7e3905 100644
--- a/arch/mips/boot/dts/brcm/bcm63268.dtsi
+++ b/arch/mips/boot/dts/brcm/bcm63268.dtsi
@@ -70,6 +70,12 @@ reboot: syscon-reboot@10000008 {
 			mask = <0x1>;
 		};
 
+		periph_rst: reset-controller@10000010 {
+			compatible = "brcm,bcm6345-reset";
+			reg = <0x10000010 0x4>;
+			#reset-cells = <1>;
+		};
+
 		periph_intc: interrupt-controller@10000020 {
 			compatible = "brcm,bcm6345-l1-intc";
 			reg = <0x10000020 0x20>,
diff --git a/include/dt-bindings/reset/bcm63268-reset.h b/include/dt-bindings/reset/bcm63268-reset.h
new file mode 100644
index 000000000000..6a6403a4c2d5
--- /dev/null
+++ b/include/dt-bindings/reset/bcm63268-reset.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM63268_H
+#define __DT_BINDINGS_RESET_BCM63268_H
+
+#define BCM63268_RST_SPI	0
+#define BCM63268_RST_IPSEC	1
+#define BCM63268_RST_EPHY	2
+#define BCM63268_RST_SAR	3
+#define BCM63268_RST_ENETSW	4
+#define BCM63268_RST_USBS	5
+#define BCM63268_RST_USBH	6
+#define BCM63268_RST_PCM	7
+#define BCM63268_RST_PCIE_CORE	8
+#define BCM63268_RST_PCIE	9
+#define BCM63268_RST_PCIE_EXT	10
+#define BCM63268_RST_WLAN_SHIM	11
+#define BCM63268_RST_DDR_PHY	12
+#define BCM63268_RST_FAP0	13
+#define BCM63268_RST_WLAN_UBUS	14
+#define BCM63268_RST_DECT	15
+#define BCM63268_RST_FAP1	16
+#define BCM63268_RST_PCIE_HARD	17
+#define BCM63268_RST_GPHY	18
+
+#endif /* __DT_BINDINGS_RESET_BCM63268_H */
-- 
2.27.0

[PATCH v5 9/9] mips: bmips: add BCM6318 reset controller definitions

[Álvaro Fernández Rojas]

BCM6318 SoCs have a reset controller for certain components.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <F.fainelli@gmail.com>
---
 v5: no changes.
 v4: no changes.
 v3: add new path with BCM6318 reset controller definitions.

 include/dt-bindings/reset/bcm6318-reset.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 include/dt-bindings/reset/bcm6318-reset.h

diff --git a/include/dt-bindings/reset/bcm6318-reset.h b/include/dt-bindings/reset/bcm6318-reset.h
new file mode 100644
index 000000000000..f4fef7bfb06d
--- /dev/null
+++ b/include/dt-bindings/reset/bcm6318-reset.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __DT_BINDINGS_RESET_BCM6318_H
+#define __DT_BINDINGS_RESET_BCM6318_H
+
+#define BCM6318_RST_SPI		0
+#define BCM6318_RST_EPHY	1
+#define BCM6318_RST_SAR		2
+#define BCM6318_RST_ENETSW	3
+#define BCM6318_RST_USBD	4
+#define BCM6318_RST_USBH	5
+#define BCM6318_RST_PCIE_CORE	6
+#define BCM6318_RST_PCIE	7
+#define BCM6318_RST_PCIE_EXT	8
+#define BCM6318_RST_PCIE_HARD	9
+#define BCM6318_RST_ADSL	10
+#define BCM6318_RST_PHYMIPS	11
+#define BCM6318_RST_HOSTMIPS	11
+
+#endif /* __DT_BINDINGS_RESET_BCM6318_H */
-- 
2.27.0